Hardiness Zones

Hardiness zone maps are not very detailed and do not accurately show hardiness zones in much of the West due to elevation and microclimate variations. The table below includes hardiness zones using the USDA temperature ranges but calculated with local weather data gathered from 1990 to 2019. Hardiness zones are included for most weather stations in Utah and for several stations in each of the surrounding states. The data was provided by Utah Climate Center at Utah State University and calculations were done by Gabrielle Harden, Forestry Extension. To find your zone, find a station near you that is similar in elevation and other factors. A station designation like Telluride 4WNW indicates that the station is located 4 miles west-northwest of Telluride, Colorado.

Though this table gives more detailed coverage, these zones should be used with caution. Slight differences between weather station conditions and your site could mean large differences in the hardiness zone value. Also, these are means rather than absolute minimums, so if your area occasionally gets much colder than the mean temperature in the table then you might consider going with a lower hardiness zone. These averages may vary from those in the official USDA map due to the difference in time periods for used data (1990 to 2019 vs 1976 to 2005). Cache County in Utah, for example, shows mostly at zone 5b on the map but the figures below for Cache County are mostly zone 4b. When in doubt, or if you are worried about losing a plant, use a more conservative zone value (lower zone number).

Zone temperature designations were determined using the USDA Plant Hardiness Zone Map.

Calculated Average and Minimum USDA Hardiness Zones for 1990 - 2019 by State, County, and Weather Station

County Weather Station Elev. (feet) Average Annual Minimum Temperature (F) Absolute Minimum (F) Average and Minimum Hardiness Zones Years of Data
Beaver Beaver Canyon Pwr House 7275 -7.6 -16.6 Zones 6a, 5a 22
Beaver Big Flat 10349 -11.2 -23.8 Zones 5b, 4b 30
Beaver Brimstone Res. - Milford 20WSW 5620 -0.4 -11.2 Zones 6b, 5b 30
Beaver Merchant Valley 8703 -11.2 -27.4 Zones 5b, 4a 29
Beaver Milford Muni AP 5040 -13 -34.6 Zones 5b, 3b 29
Box Elder Brigham City Waste Plt 4230 -4 -25.6 Zones 6b, 4a 30
Box Elder Cutler Dam 4290 -2.2 -18.4 Zones 6b, 5a 30
Box Elder Rosette 5685 -5.8 -23.8 Zones 6a, 4b 30
Box Elder Thiokol Plant 78 4600 -25.6 -25.6 Zones 4a, 4a 20
Box Elder Tremonton 4310 3.2 -18.4 Zones 7a, 5a 20
Box Elder Utah Test Range 4440 -4 -25.6 Zones 6b, 4a 28
Cache Dry Bread Pond 8350 -7.6 -25.6 Zones 6a, 4a 30
Cache Little Bear 6544 -4 -23.8 Zones 6b, 4b 29
Cache Logan 5 SW Exp. Farm 4489 -14.8 -43.6 Zones 5b, 2b 30
Cache Logan Cache AP 4454 -13 -31 Zones 5b, 3b 22
Cache Logan Radio KVNU 4475 -9.4 -29.2 Zones 6a, 4a 30
Cache Logan Utah State Univ. 4790 -2.2 -11.2 Zones 6b, 5b 30
Cache Monte Cristo 8960 -11.2 -41.8 Zones 5b, 2b 29
Cache Richmond 4680 -7.6 -27.4 Zones 6a, 4a 30
Cache Trenton 4455 -9.4 -32.8 Zones 6a, 3b 29
Carbon Bruin Point Sunnyside 6NNE U 10200 -11.2 -23.8 Zones 5b, 4b 29
Carbon Price Carbon Co AP 5921 -2.2 -9.4 Zones 6b, 6a 21
Carbon Scofield Skyline Mine 8697 -11.2 -22 Zones 5b, 4b 30
Carbon Sunnyside City Ctr 6530 -0.4 -14.8 Zones 6b, 5b 19
Daggett Cart Creek Utah 6900 -9.4 -20.2 Zones 6a, 4b 22
Daggett Flaming Gorge 6244 -14.8 -36.4 Zones 5b, 3a 30
Daggett Hickerson Park 9145 -22 -32.8 Zones 4b, 3b 29
Daggett Kings Point - Dutch John 16ESE 5670 -13 -34.6 Zones 5b, 3b 30
Daggett Manila 6393 -11.2 -22 Zones 5b, 4b 20
Davis Bountiful - Val Verda 4540 6.8 -9.4 Zones 7b, 6a 25
Davis Bountiful Bench 4950 3.2 -16.6 Zones 7a, 5a 30
Davis Farmington USU Field Stn. 4380 5 -11.2 Zones 7b, 5b 26
Duchesne Altamont 6456 -11.2 -32.8 Zones 5b, 3b 30
Duchesne Brown Duch 10600 -16.6 -27.4 Zones 5a, 4a 30
Duchesne Chepeta 10592 -18.4 -31 Zones 5a, 3b 29
Duchesne Duchesne 5551 -11.2 -29.2 Zones 5b, 4a 30
Duchesne Five Mile Duchesne 18SSE UTA 8000 -0.4 -14.8 Zones 6b, 5b 29
Duchesne Five Points Lake 10940 -16.6 -29.2 Zones 5a, 4a 29
Duchesne Horse Ridge Utah 8480 -4 -9.4 Zones 6b, 6a 22
Duchesne Indian Canyon 9175 -7.6 -23.8 Zones 6a, 4b 29
Duchesne Lakefork Basin 10966 -16.6 -25.6 Zones 5a, 4a 27
Duchesne Myton 5082 -11.2 -27.4 Zones 5b, 4a 30
Duchesne Neola 5950 -9.4 -25.6 Zones 6a, 4a 30
Duchesne Rock Creek 7889 -11.2 -45.4 Zones 5b, 2a 28
Emery Castle Dale 5629 -9.4 -27.4 Zones 6a, 4a 30
Emery Ferron 5923 -2.2 -20.2 Zones 6b, 4b 30
Emery Flattop Mountain Cleveland 1 6120 5 -9.4 Zones 7b, 6a 30
Emery Red Ridge Pine 9009 -14.8 -25.6 Zones 5b, 4a 29
Garfield Boulder 6649 3.2 -11.2 Zones 7a, 5b 30
Garfield Bryce Canyon Airport 7585 -18.4 -31 Zones 5a, 3b 20
Garfield Bryce Cyn NP HQRS 7915 -5.8 -23.8 Zones 6a, 4b 30
Garfield Escalante 5810 1.4 -11.2 Zones 7a, 5b 30
Garfield Panguitch 6647 -13 -29.2 Zones 5b, 4a 26
Garfield Widtsoe #3 9640 -5.8 -18.4 Zones 6a, 5a 29
Grand Arches NP HQS 4093 6.8 -4 Zones 7b, 6b 30
Grand Bryson Canyon Utah 5320 3.2 -9.4 Zones 7a, 6a 30
Grand Castle Valley 4725 6.8 -4 Zones 7b, 6b 20
Grand East Willow Creek 8301 -9.4 -23.8 Zones 6a, 4b 29
Grand Moab 4053 6.8 -5.8 Zones 7b, 6a 30
Iron Blowhard Mtn. Radar 10694 -5.8 -20.2 Zones 6a, 4b 17
Iron Brian Head 9770 -11.2 -18.4 Zones 5b, 5a 19
Iron Cedar City Muni AP 5586 -7.6 -22 Zones 6a, 4b 30
Iron Jensen Spring Beryl 12NNE 5744 1.4 -16.6 Zones 7a, 5a 30
Iron Kolob 9206 -4 -14.8 Zones 6b, 5b 26
Iron Midway Valley 9800 -9.4 -20.2 Zones 6a, 4b 29
Iron Parowan Power Plant 5878 -2.2 -22 Zones 6b, 4b 20
Juab Callao 4342 -5.8 -23.8 Zones 6a, 4b 30
Juab Fish Springs Refuge 4357 -2.2 -18.4 Zones 6b, 5a 27
Juab Levan 5298 -5.8 -18.4 Zones 6a, 5a 30
Juab Little Sahara Rec Area 5230 -11.2 -32.8 Zones 5b, 3b 30
Juab Mud Spring Eureka 13SW Utah 5760 -4 -23.8 Zones 6b, 4b 30
Juab Nephi 5146 -4 -20.2 Zones 6b, 4b 30
Juab Partoun 4780 -9.4 -25.6 Zones 6a, 4a 30
Juab Sevier Reservoir 5330 -4 -23.8 Zones 6b, 4b 30
Kane Agua Canyon 8900 -2.2 -11.2 Zones 6b, 5b 25
Kane Alton 7098 -4 -23.8 Zones 6b, 4b 30
Kane Assay Hatch 10SW 8100 -4 -14.8 Zones 6b, 5b 30
Kane Big Water 4100 10.4 -2.2 Zones 8a, 6b 29
Kane Bullfrog Basin 3822 14 -0.4 Zones 8a, 6b 24
Kane Harris Flat 7800 -18.4 -40 Zones 5a, 3a 29
Kane Kanab 4900 5 -11.2 Zones 7b, 5b 30
Kane Kodachrome Basin Park 5805 -4 -22 Zones 6b, 4b 30
Kane Long Valley Jct 7464 -4 -22 Zones 6b, 4b 29
Kane Orderville 5460 -4 -20.2 Zones 6b, 4b 25
Millard Black Cedar Fillmore 5E Utah 6480 -0.4 -16.6 Zones 6b, 5a 30
Millard Black Rock 4900 -13 -36.4 Zones 5b, 3a 30
Millard Delta 4620 -7.6 -29.2 Zones 6a, 4a 30
Millard Deseret 4590 -7.6 -23.8 Zones 6a, 4b 30
Millard Eskdale 4980 -11.2 -27.4 Zones 5b, 4a 30
Millard Fillmore 5120 -0.4 -18.4 Zones 6b, 5a 30
Millard Horse Hollow Cove Fort 5W UT 6010 -4 -25.6 Zones 6b, 4a 30
Millard Kanosh 4382 -2.2 -20.2 Zones, 6b, 4b 21
Millard Pine Creek 8790 -5.8 -23.8 Zones 6a, 4b 29
Millard Scipio 5314 -14.8 -36.4 Zones 5b, 3a 30
Millard Tule Valley Delta 49W UT 5200 5 -9.4 Zones 7b, 6a 30
Morgan Hardscrabble 7250 -4 -13 Zones 6b, 5b 26
Morgan Morgan 5100 -9.4 -32.8 Zones 6a, 3b 26
Piute Angle 6410 -14.8 -32.8 Zones 5b, 3b 30
Piute Circleville 6050 -9.4 -31 Zones 6a, 3b 21
Piute Kimberly Mine 9129 -9.4 -25.6 Zones 6a, 4a 29
Piute Marysvale 5845 -9.4 -34.6 Zones 6a, 3b 25
Rich Bug Lake 7950 -11.2 -25.6 Zones 5b, 4a 30
Rich Laketown 5980 -9.4 -27.4 Zones 6a, 4a 30
Rich Randolph 6270 -25.6 -41.8 Zones 4a, 2b 28
Rich Woodruff 6315 -27.4 -45.4 Zones 4a, 2a 30
Salt Lake Alta 8730 -7.6 -25.6 Zones 6a, 4a 29
Salt Lake Cottonwood Weir 4986 5 -11.2 Zones 7a, 5b 30
Salt Lake Dry Fork 7093 -2.2 -9.4 Zones 6b, 6a 25
Salt Lake Garfield 4298 8.6 -5.8 Zones 7b, 6a 25
Salt Lake Lookout Peak 8200 -7.6 -23.8 Zones 6a, 4b 29
Salt Lake Mill D North 8967 -5.8 -23.8 Zones 6a, 4b 29
Salt Lake Mountain Dell Dam 5420 -4 -25.6 Zones 6b, 4a 26
Salt Lake Parleys Summit 7500 -4 -14.8 Zones 6b, 5b 29
Salt Lake Salt Lake City Airport 4225 1.4 -11.2 Zones 7a, 5b 30
Salt Lake Silver Lake Brighton 8740 -13 -29.2 Zones 5b, 4a 30
San Juan Aneth Plant 4576 6.8 -16.6 Zones 7b, 5a 19
San Juan Big Indian Valley Lasal 6S U 6960 3.2 -9.4 Zones 7a, 6a 30
San Juan Blanding 6032 5 -13 Zones 7a, 5b 30
San Juan Bluff 4320 1.4 -22 Zones 7a, 4b 30
San Juan Camp Jackson 8968 -0.4 -16.6 Zones 6b, 5a 29
San Juan Canyonlands, the Neck 5871 5 -9.4 Zones 7a, 6a 30
San Juan Canyonlands, the Needle 4906 1.4 -14.8 Zones 7a, 5b 30
San Juan Cedar Point 6760 -2.2 -20.2 Zones 6b, 4b 29
San Juan Hovenweep Natl. Monu. 5240 -0.4 -23.8 Zones 6b, 4b 30
San Juan La Sal 1SW 6787 -5.8 -20.2 Zones 6a, 4b 30
San Juan Lasal Mountain 9560 -5.8 -20.2 Zones 6a, 4b 29
San Juan Mexican Hat 4109 6.8 -16.6 Zones 7b, 5a 30
San Juan Natural Bridges Natl Mon. 6508 1.4 -14.8 Zones 7a, 5b 30
Sanpete Beaver Dams 7990 -11.2 -29.2 Zones 5b, 4a 29
Sanpete Dills Camp 9182 -4 -18.4 Zones 6b, 5a 29
Sanpete Ephraim 5498 -14.8 -34.6 Zones 5b, 3b 30
Sanpete Mammoth Cottonwood 8727 -13 -29.2 Zones 5b, 4a 29
Sanpete Manti 5740 -5.8 -23.8 Zones 6a, 4b 30
Sanpete Moroni 5560 -9.4 -25.6 Zones 6a, 4a 30
Sevier Black Flat U.M. Ck 9462 -13 -29.2 Zones 5b, 4a 29
Sevier Koosharem 6930 -13 -32.8 Zones 5b, 3b 20
Sevier Lost Creek Salina 12S Utah 7490 -2.2 -16.6 Zones 6b, 5a 30
Sevier Pickle Keg 9600 -4 -14.8 Zones 6b, 5b 27
Sevier Richfield Radio KSVC 5300 -9.4 -32.8 Zones 6a, 3b 30
Sevier Salina 24 E 7560 -4 -18.4 Zones 6b, 5a 30
Sevier Signal Peak Monroe 5E Utah 8750 -4 -22 Zones 6b, 4b 30
Summit Beaver Divide 8280 -13 -25.6 Zones 5b, 4a 30
Summit Chalk Creek #2 8158 -11.2 -25.6 Zones 5b, 4a 28
Summit Coalville 5550 -13 -25.6 Zones 5b, 4a 23
Summit Echo Dam 5470 -14.8 -32.8 Zones 5b, 3b 30
Summit Hayden Fork 9212 -18.4 -31 Zones 5a, 3b 29
Summit Hewinta 9519 -22 -31 Zones 4b, 3b 29
Summit Hole in Rock 9150 -20.2 -31 Zones 4b, 3b 29
Summit Kamas 6480 -11.2 -31 Zones 5b, 3b 30
Summit Park City 6923 -7.6 -18.4 Zones 6a, 5a 21
Summit Smith & Morehouse 7600 -11.2 -18.4 Zones 5b, 5a 28
Summit Steel Creek Park 10200 -16.6 -38.2 Zones 5a, 3a 28
Summit Thaynes Canyon 9230 -7.6 -23.8 Zones 6a, 4b 29
Summit Wanship Dam 5940 -14.8 -27.4 Zones 5b, 4a 30
Tooele Cedar Mountains Stockton 24W 4000 -2.2 -20.2 Zones 6b, 4b 28
Tooele Dugway 4345 -9.4 -27.4 Zones 6a, 4a 24
Tooele Ibapah 5280 -14.8 -27.4 Zones 5b, 4a 30
Tooele Johnson Pass 5580 -2.2 -18.4 Zones 6b, 5a 24
Tooele Mining Fork 8221 -2.2 -22 Zones 6b, 4b 29
Tooele Rocky Basin Settleme 8900 -7.6 -23.8 Zones 6a, 4b 29
Tooele Tooele 4944 1.4 -16.6 Zones 7a, 5a 30
Tooele Vernon 5471 -11.2 -25.6 Zones 5b, 4a 29
Tooele Wendover Airport 4237 1.4 -18.4 Zones 7a, 5a 28
Uintah Diamond Rim 5500 -7.6 -29.2 Zones 6a, 4a 30
Uintah Dinosaur Natl. Monu. Quarry 4802 -14.8 -32.8 Zones 5b, 3b 30
Uintah Fort Duchesne 5052 -13 -38.2 Zones 5b, 3a 30
Uintah Jensen 4736 -16.6 -36.4 Zones 5a, 3a 30
Uintah Kings Cabin 8724 -16.6 -32.8 Zones 5a, 3b 28
Uintah Mccook Ridge 7000 -5.8 -25.6 Zones 6a, 4a 30
Uintah Mosby Mtn 9510 -14.8 -29.2 Zones 5b, 4a 29
Uintah Ouray 4 NE 4674 -18.4 -40 Zones 5a, 3a 30
Uintah Roosevelt Radio 5014 -18.4 -40 Zones 5a, 3a 30
Uintah Trout Creek 9518 -18.4 -32.8 Zones 5a, 3b 29
Uintah Upper P.R. Canyon Utah 8200 -7.6 -23.8 Zones 6a, 4b 30
Uintah Upper Sand Wash Utah 6300 -7.6 -27.4 Zones 6a, 4a 30
Uintah Vernal Municipal AP 5260 -9.4 -20.2 Zones 6a, 4b 30
Utah Alpine 5070 1.4 -7.6 Zones 7a, 6a 28
Utah Clear Creek #1 8908 -5.8 -22 Zones 6a, 4b 29
Utah Clear Creek #2 7659 -9.4 -25.6 Zones 6a, 4a 29
Utah Fairfield 4880 -13 -29.2 Zones 5b, 4a 30
Utah Pleasant Grove 4692 5 -14.8 Zones 7a, 5b 29
Utah Provo BYU 4570 5 -16.6 Zones 7a, 5a 30
Utah Santaquin Chlorinator 5160 -2.2 -20.2 Zones 6b, 4b 30
Utah Spanish Fork Powerhouse 4720 -0.4 -14.8 Zones 6b, 5b 30
Utah Timpanogos Cave 5740 1.4 -14.8 Zones 7a, 5b 29
Utah Timpanogos Divide 8140 -5.8 -25.6 Zones 6a, 4a 28
Utah Utah Lake Lehi 4505 1.4 -16.6 Zones 7a, 5a 22
Wasatch Daniels Strawberry 8037 -11.2 -29.2 Zones 5b, 4a 29
Wasatch Deer Creek Dam 5270 -11.2 -29.2 Zones 5b, 4a 30
Wasatch Heber 5590 -11.2 -34.6 Zones 5b, 3b 24
Wasatch Snake Crk. Powerhouse 6010 -9.4 -29.2 Zones 6a, 4a 26
Wasatch White River #1 8641 -9.4 -23.8 Zones 6a, 4b 29
Washington Badger Spring Ivins 14W Utah 3990 21.2 12.2 Zones 9a, 8a 30
Washington La Verkin 3194 14 1.4 Zones 8a, 7a 30
Washington Lava Point Utah 7700 -5.8 -16.6 Zones 6a, 5a 24
Washington Little Grass 6100 1.4 -13 Zones 7a, 5b 29
Washington Long Flat 8000 -4 -20.2 Zones 6b, 4b 28
Washington Lytle Rch 2787 14 3.2 Zones 8a, 7a 29
Washington New Harmony 5167 3.2 -18.4 Zones 7a, 5a 30
Washington St. George 2857 19.4 3.2 Zones 8b, 7a 30
Washington Veyo Powerhouse 4600 12.2 -2.2 Zones 8a, 6b 28
Washington Zion National Park 4038 10.4 -5.8 Zones 8a, 6a 30
Wayne Capitol Reef N.P. 5500 6.8 -7.6 Zones 7b, 6a 30
Wayne Donkey Reservoir 9800 -18.4 -29.2 Zones 5a, 4a 29
Wayne Hanksville 4308 -2.2 -14.8 Zones 6b, 5b 29
Wayne Hans Flat Rs 6600 5 -9.4 Zones 7a, 6a 30
Wayne Loa 7070 -11.2 -25.6 Zones 5b, 4a 21
Weber Ben Lomond Peak 8000 -2.2 -20.2 Zones 6b, 4b 30
Weber Ben Lomond Trail 5829 6.8 -7.6 Zones 7b, 6a 29
Weber Bues Canyon Utah 5100 5 -5.8 Zones 7a, 6a 29
Weber Horse Ridge 8160 -7.6 -29.2 Zones 6a, 4a 29
Weber Huntsville Monastery 5140 -16.6 -36.4 Zones 5a, 3a 24
Weber Ogden Hinkley AP 4470 3.2 -7.6 Zones 7a, 6a 22
Weber Pine View Dam 4940 -13 -36.4 Zones 5b, 3a 30
County Weather Station Elev. (feet) Average Annual Minimum Temperature (F) Absolute Minimum (f) Average and
Minimum Hardiness Zones 		Years of Data
Apache Baldy 9125 -5.8 -20.2 Zones 6a, 4b 30
Apache Canyon De Chelly 5610 1.4 -14.8 Zones 7a, 5b 30
Apache Coronado Trai 8400 -2.2 -18.4 Zones 6b, 5a 30
Apache Greer Arizona 8200 -5.8 -20.2 Zones 6a, 4b 28
Apache Lukachukai 6520 1.4 -18.4 Zones 7a, 5a 19
Apache Mc Nary 2N 7340 1.4 -13 Zones 7a, 5b 30
Apache Saint Johns 5790 -0.4 -25.6 Zones 6b, 4a 29
Apache Sanders 5853 -2.2 -16.6 Zones 6b, 5a 30
Apache Springerville 6998 -7.6 -25.6 Zones 6a, 4a 30
Apache Teec Nos Pos 5290 5 -11.2 Zones 7a, 5b 30
Apache Window Rock AP 6739 -9.4 -25.6 Zones 6a, 4a 24
Coconino Baker Butte 7300 10.4 -9.4 Zones 8a, 6a 30
Coconino Buckskin Mountain Arizona 6400 -2.2 -11.2 Zones 6b, 5b 26
Coconino Flagstaff Arizona 7000 -7.6 -27.4 Zones 6a, 4a 26
Coconino Four Springs Arizona 6560 6.8 -2.2 Zones 7b, 6b 26
Coconino Frazier Wells Arizona 6770 8.6 1.4 Zones 7b, 7a 21
Coconino FT Valley 7347 -11.2 -29.2 Zones 5b, 4a 28
Coconino Grand Canyon NP 2 6785 -2.2 -20.2 Zones 6b, 4b 23
Coconino Grand Canyon NP AP 6606 -13 -29.2 Zones 5b, 4a 24
Coconino Gunsight Arizona 5280 10.4 -0.4 Zones 8a, 6b 26
Coconino Lees Ferry 3210 17.6 8.6 Zones 8b, 7b 20
Coconino Mormon Mountain 7500 -5.8 -14.8 Zones 6a, 5b 30
Coconino Munds Park 6470 -7.6 -27.4 Zones 6a, 4a 24
Coconino Oak Creek Arizona 4924 15.8 5 Zones 8b, 7b 28
Coconino Page 4270 15.8 1.4 Zones 8b, 7a 23
Coconino Paria Point Arizona 7235 5 -5.8 Zones 7a, 6a 25
Coconino Phantom Ranch 2530 26.6 21.2 Zones 9b, 9a 30
Coconino Promontory 7930 6.8 -7.6 Zones 7b, 6a 30
Coconino Sunset Crater NM 6980 -9.4 -25.6 Zones 6a, 4a 30
Coconino Tusayan 6700 -11.2 -32.8 Zones 5b, 3b 30
Coconino Wahweap 3730 15.8 3.2 Zones 8b, 7a 23
Coconino Warm Springs Canyon Arizona 8010 1.4 -7.6 Zones 7a, 6a 25
Coconino White Horse Lake 7180 3.2 -14.8 Zones 7a, 5b 30
Coconino Williams 6909 1.4 -11.2 Zones 7a, 5b 30
Coconino Wupatki NM 4908 10.4 -5.8 Zones 8a, 6a 30
Mohave Black Rock Arizona 7080 6.8 -2.2 Zones 7b, 6b 28
Mohave Bullhead City 531 30.2 23 Zones 10a, 9a 30
Mohave Diamond M Rch 5492 3.2 -9.4 Zones 7a, 6a 22
Mohave Havasu Arizona 475 14 6.8 Zones 8a, 7b 26
Mohave Hurricane Arizona 5446 10.4 1.4 Zones 8a, 7a 26
Mohave Kingman Mohave 3420 15.8 8.6 Zones 8b, 7b 24
Mohave Moss Basin Arizona 5920 12.2 1.4 Zones 8a, 7a 28
Mohave Mount Logan Arizona 7200 5 -14.8 Zones 7a, 5b 30
Mohave Music Mountain Arizona 5420 14 1.4 Zones 8a, 7a 24
Mohave Nixon Flats Arizona 6500 -0.4 -11.2 Zones 6b, 5b 28
Mohave Olaf Knolls Arizona 2900 24.8 6.8 Zones 9a, 7b 30
Mohave Pipe Springs Natl. Monu. 4920 3.2 -13 Zones 7a, 5b 30
Mohave Tweeds Point Arizona 5200 15.8 -2.2 Zones 8b, 6b 30
Mohave Union Pass Arizona 3520 26.6 19.4 Zones 9b, 8b 26
Mohave Yellow John Mtn Arizona 6160 -13 -34.6 Zones 8b, 3b 30
Navajo Betatakin 7286 1.4 -14.8 Zones 7a, 5b 30
Navajo Keams Canyon 6205 -2.2 -29.2 Zones 6b, 4a 23
Navajo Lakeside Arizona 7000 -4 -20.2 Zones 6b, 4b 30
Navajo Limestone Canyon Arizona 6800 8.6 -7.6 Zones 7b, 6a 30
Navajo Monument Valley 5501 10.4 -9.4 Zones 8a, 6a 21
Navajo Petrified Forest NP 5446 1.4 -23.8 Zones 7a, 4b 30
Navajo Show Low AP 6411 1.4 -22 Zones 7a, 4b 30
Navajo Snowflake 5642 1.4 -20.2 Zones 7a, 4b 27
Navajo Winslow Muni AP 4886 3.2 -11.2 Zones 7a, 5b 30
Yavapai Bagdad 3935 19.4 8.6 Zones 8b, 7b 30
Yavapai Castle Hot Springs 1990 28.4 21.2 Zones 9b, 9a 29
Yavapai Chino Valley 4750 10.4 -9.4 Zones 8a, 6a 30
Yavapai Cordes 3771 19.4 8.6 Zones 8b, 7b 30
Yavapai Crown King Arizona 5900 19.4 3.2 Zones 8b, 7a 25
Yavapai Goodwin Mesa Arizona 4200 19.4 8.6 Zones 8b, 7b 30
Yavapai Humbug Creek Arizona 5250 21.2 10.4 Zones 9a, 8a 30
Yavapai Iron Springs 5920 8.6 -11.2 Zones 7b, 5b 26
Yavapai Jerome 4950 19.4 8.6 Zones 8b, 7b 30
Yavapai Montezuma Castle NM 3180 14 3.2 Zones 8a, 7a 30
Yavapai Prescott Love Fld 5042 10.4 -9.4 Zones 8a, 6a 30
Yavapai Prescott 5205 8.6 -7.6 Zones 7b, 6a 30
Yavapai Seligman 5250 3.2 -11.2 Zones 7a, 5b 30
Yavapai Stanton Arizona 3600 26.6 15.8 Zones 9b, 8b 30
Yavapai Sunset Point Arizona 2960 24.8 17.6 Zones 9a, 8b 26
Yavapai Tuzigoot 3470 17.6 6.8 Zones 8b, 7b 30
Yavapai Verde Arizona 3100 15.8 8.6 Zones 8b, 7b 27
Yavapai Walnut Creek 5090 3.2 -11.2 Zones 7a, 5b 30
County Weather Station Elev. (feet) Average Annual Minimum Temperature (F) Absolute Minimum (F) Average and Minimum Hardiness Zones Years of Data
Delta Cedaredge 3E 6838 -0.4 -13 Zones 6b, 5b 24
Delta Jay Colorado 6200 1.4 -11.2 Zones 7a, 5b 30
Delta Overland Res. 9840 -16.6 -29.2 Zones 5a, 4a 30
Delta Paonia 1 SW 5581 -4 -14.8 Zones 6b, 5b 27
Dolores El Diente Peak 10000 -14.8 -29.2 Zones 5b, 4a 30
Dolores Lizard Head Pass 10200 -14.8 -27.4 Zones 5b, 4a 30
Dolores Salter Colorado 8150 -4 -14.8 Zones 6b, 5b 30
Dolores Scotch Creek 9100 -14.8 -27.4 Zones 5b, 4a 30
Garfield Altenbern 5637 -9.4 -23.8 Zones 6a, 4b 30
Garfield Bison Lake 10880 -14.8 -27.4 Zones 5b, 4a 30
Garfield Demaree Colorado 7157 1.4 -13 Zones 7a, 5b 25
Garfield Glenwood Spgs #2 5895 -5.8 -20.2 Zones 6a, 4b 30
Garfield Rifle Colorado 6120 -2.2 -16.6 Zones 6b, 5a 30
Garfield Storm King Mountain Colorado 8793 -5.8 -20.2 Zones 6a, 4b 25
Garfield Trapper Lake 9700 -18.4 -34.6 Zones 5a, 3b 30
Hinsdale Lake City 8667 -18.4 -29.2 Zones 5a, 4a 21
Hinsdale Slumgullion 11440 -13 -27.4 Zones 5b, 4a 30
Hinsdale Upper Rio Grande 9400 -22 -32.8 Zones 4b, 3b 30
La Plata Columbus Basin 10785 -7.6 -18.4 Zones 6a, 5a 26
La Plata Durango La Plata Co AP 6660 -11.2 -27.4 Zones 5b, 4a 24
La Plata Lemon Dam 8110 -11.2 -20.2 Zones 5b, 4b 30
La Plata Mesa Mountain Colorado 7380 3.2 -7.6 Zones 7a, 6a 27
La Plata Vallecito Dam 7644 -13 -23.8 Zones 5b, 4b 30
La Plata Vallecito 10880 -7.6 -22 Zones 6a, 4b 30
Mesa Colorado Natl. Monu. 5780 3.2 -11.2 Zones 7a, 5b 30
Mesa Gateway 1ENE 4670 -4 -9.4 Zones 6b, 6a 30
Mesa Jacks Canyon Colorado 7660 -7.6 -16.6 Zones 6a, 5a 29
Mesa Little Delores Colorado 6796 -2.2 -13 Zones 6b, 5b 20
Mesa Mesa Lakes 10000 -13 -27.4 Zones 5b, 4a 30
Mesa Palisade 4751 5 -9.4 Zones 7a, 6a 30
Mesa Pine Ridge Colorado 6600 -2.2 -14.8 Zones 6b, 5b 30
Moffat Craig Moffat CO AP 6186 -25.6 -40 Zones 4a, 3a 24
Moffat Dinosaur Natl. Monu. 5960 -9.4 -29.2 Zones 6a, 4a 26
Moffat Great Divide Colorado 7200 -9.4 -25.6 Zones 6a, 4a 29
Moffat Ladore Colorado 5900 -11.2 -38.2 Zones 5b, 3a 30
Moffat Maybell 5944 -27.4 -43.6 Zones 4a, 2b 30
Montezuma Cortez Montezuma CO AP 5914 -7.6 -18.4 Zones 6a, 5a 24
Montezuma Cortez 6167 -5.8 -20.2 Zones 6a, 4b 30
Montezuma Mancos 10000 -4 -13 Zones 6b, 5b 26
Montezuma Mesa Verde NP 7142 -0.4 -14.8 Zones 6b, 5b 30
Montrose Black Canyon Colorado 8560 -5.8 -18.4 Zones 6a, 5a 23
Montrose Carpenter Ridge Colorado 8088 1.4 -11.2 Zones 7a, 5b 22
Montrose Cimarron 7011 -23.8 -36.4 Zones 4b, 3a 30
Montrose Columbine Pass 9400 -9.4 -23.8 Zones 6a, 4b 30
Montrose Cottonwood Basin Colorado 7220 -2.2 -13 Zones 6b, 5b 29
Montrose Montrose #2 5789 -2.2 -16.6 Zones 6b, 5a 30
Montrose Montrose Rgnl AP 5759 -5.8 -14.8 Zones 6a, 5b 24
Montrose Nucla Colorado 5860 -2.2 -9.4 Zones 6b, 6a 22
Montrose Sanborn Park Colorado 7930 -7.6 -20.2 Zones 6a, 4b 30
Montrose Uravan 5021 -0.4 -9.4 Zones 6b, 6a 27
Ouray Idarado 9800 -14.8 -31 Zones 5b, 3b 30
Ouray Ridgeway 7049 -18.4 -29.2 Zones 5a, 4a 30
Rio Blanco Burro Mountain 9400 -13 -27.4 Zones 5b, 4a 30
Rio Blanco Crosho 9100 -16.6 -31 Zones 5a, 3b 30
Rio Blanco Dragon Road Colorado 6300 -5.8 -14.8 Zones 6a, 5b 22
Rio Blanco Hunter Creek Colorado 7320 -7.6 -23.8 Zones 6a, 4b 30
Rio Blanco Meeker AP 6390 -22 -36.4 Zones 2b, 3a 23
Rio Blanco Meeker 6229 -20.2 -34.6 Zones 4b, 3b 27
Rio Blanco Pinto Colorado 6940 -9.4 -25.6 Zones 6a, 4a 30
Rio Blanco Ripple Creek 10340 -14.8 -31 Zones 5b, 3b 30
San Juan Beartown 11600 -11.2 -25.6 Zones 5b, 4a 30
San Juan Cascade #2 8919 -7.6 -20.2 Zones 6a, 4b 30
San Juan Mineral Creek 10040 -16.6 -25.6 Zones 5a, 4a 30
San Juan Molas Lake 10500 -14.8 -29.2 Zones 5b, 4a 30
San Juan Red Mountain Pass 11200 -14.8 -25.6 Zones 5b, 4a 30
San Juan Silverton 9285 -23.8 -34.6 Zones 4b, 3b 30
San Juan Spud Mountain 10660 -9.4 -20.2 Zones 6a, 4b 30
San Miguel Lone Cone 9600 -18.4 -29.2 Zones 5a, 4a 30
San Miguel Telluride 4WNW 8647 -20.2 -31 Zones 4b, 3b 25
County Weather Station Elev. (feet) Average Annual Minimum Temperature (F) Absolute Minimum (F) Average and Minimum Hardiness Zones Years of Data
Ada Boise Air Terminal 2814 3.2 -25.6 Zones 7a, 4a 30
Ada Orchard Range Site 3150 -2.2 -29.2 Zones 6b, 4a 26
Ada Swan Falls Power House 2325 6.8 -20.2 Zones 7b, 4b 30
Bear Lake Bern 5964 -20.2 -29.2 Zones 4b, 4a 28
Bear Lake Giveout 6930 -16.6 -32.8 Zones 5a, 3b 30
Bear Lake Lifton Pumping Station 5935 -16.6 -29.2 Zones 5a, 4a 30
Bear Lake Slug Creek Divide 7225 -13 -31 Zones 5b, 3b 30
Bingham Aberdeen Exp. Stn. 4405 -13 -29.2 Zones 5b, 4a 30
Bingham Sheep Mtn 6570 -9.4 -27.4 Zones 6a, 4a 30
Blaine Chocolate Gulch 6440 -13 -22 Zones 5b, 4b 27
Blaine Dollarhide Summit 8420 -5.8 -22 Zones 6a, 4b 30
Blaine Galena Summit 8780 -11.2 -29.2 Zones 5b, 4a 30
Blaine Garfield R.S. 6560 -11.2 -31 Zones 5b, 3b 30
Blaine Hyndman 7440 -11.2 -29.2 Zones 5b, 4a 30
Blaine Ketchum RS 5890 -13 -36.4 Zones 5b, 3a 30
Blaine Lost Wood Divide 7900 -16.6 -25.6 Zones 5a, 4a 30
Blaine Ohio Gulch Idaho 6220 -7.6 -27.4 Zones 6a, 4a 30
Blaine Picabo 4839 -14.8 -36.4 Zones 5b, 3a 30
Blaine Potter Butte Idaho 4930 -9.4 -32.8 Zones 6a, 3b 30
Blaine Swede Peak 7640 -5.8 -25.6 Zones 6a, 4a 30
Blaine Vienna Mine 8960 -11.2 -27.4 Zones 5b, 4a 30
Bonneville Idaho Falls KIFI 4742 -11.2 -18.4 Zones 5b, 5a 30
Bonneville Idaho Falls 16 SE 5828 -20.2 -41.8 Zones 4b, 2b 30
Bonneville Idaho Falls Fanning Fld 4729 -14.8 -29.2 Zones 5b, 4a 27
Bonneville Palisades 5384 -11.2 -18.4 Zones 5b, 5a 18
Bonneville Swan Valley 2 E 5397 -16.6 -43.6 Zones 5a, 2b 30
Butte Arco Idaho 5380 -22 -43.6 Zones 4b, 2b 30
Butte Craters of the Moon 5914 -11.2 -29.2 Zones 5b, 4a 30
Butte Idaho Falls 46 W 4938 -22 -38.2 Zones 4b, 3a 30
Camas Fairfield RS 5065 -20.2 -32.8 Zones 4b, 3b 30
Canyon Deer Flat Dam 2510 5 -22 Zones 7a, 4b 25
Canyon Nampa Sugar Factory 2470 3.2 -25.6 Zones 7a, 4a 25
Canyon Parma Exp St 2290 3.2 -20.2 Zones 7a, 4b 27
Caribou Grace Idaho 6210 -2.2 -23.8 Zones 6b, 4b 30
Caribou Grace 5550 -18.4 -40 Zones 5a, 3a 30
Caribou Pole Canyon Idaho 6700 -2.2 -20.2 Zones 6b, 4b 30
Caribou Somsen Ranch 6800 -13 -27.4 Zones 5b, 4a 30
Cassia Bostetter R.S. 7500 -5.8 -22 Zones 6a, 4b 30
Cassia Burley Muni Ap 4142 -4 -23.8 Zones 6b, 4b 30
Cassia Goose Creek Idaho 5660 -2.2 -27.4 Zones 6b, 4a 30
Cassia Howell Canyon 7980 -7.6 -25.6 Zones 6a, 4a 30
Cassia Malta 4521 -7.6 -25.6 Zones 6a, 4a 26
Cassia Moburg Canyon Idaho 6400 1.4 -18.4 Zones 7a, 5a 30
Cassia Oakley 4600 -4 -23.8 Zones 6b, 4b 30
Cassia Raft River Idaho 4400 -13 -34.6 Zones 5b, 3b 30
Elmore Atlanta Summit 7580 -5.8 -23.8 Zones 6a, 4b 30
Elmore Camas Creek Divide 5710 -4 -14.8 Zones 6b, 5b 30
Elmore Deer Haven Idaho 5550 1.4 -22 Zones 7a, 4b 30
Elmore Graham Guard St 5690 -20.2 -38.2 Zones 4b, 3a 30
Elmore Trinity Mtn. 7770 -14.8 -31 Zones 5b, 3b 30
Gooding Hagerman 2 SW 2897 -0.4 -25.6 Zones 6b, 4a 29
Jerome Hazelton 4060 -4 -23.8 Zones 6b, 4b 29
Jerome Jerome 3740 -0.4 -23.8 Zones 6b, 4b 30
Lincoln Richfield 4309 -9.4 -36.4 Zones 6a, 3a 30
Lincoln Rock Lake Idaho 4260 -9.4 -34.6 Zones 6a, 3b 30
Lincoln Shoshone 1 WNW 3950 -4 -27.4 Zones 6b, 4a 30
Minidoka Minidoka Dam 4164 -7.6 -25.6 Zones 6a, 4a 30
Minidoka Paul 1 ENE 4149 -4 -25.6 Zones 6b, 4a 29
Oneida Flint Creek Idaho 5200 -0.4 -25.6 Zones 6b, 4a 30
Oneida Malad City 4470 -9.4 -32.8 Zones 6a, 3b 29
Oneida Oxford Spring 6740 -2.2 -22 Zones 6b, 4b 30
Owyhee Brace Flat Idaho 4890 -11.2 -38.2 Zones 5b, 3a 30
Owyhee Grand View 4 NW 2400 1.4 -29.2 Zones 7a, 4a 21
Owyhee Horse Butte Idaho 5000 -0.4 -25.6 Zones 6b, 4a 30
Owyhee Mud Flat 5730 -11.2 -34.6 Zones 5b, 3b 30
Owyhee Murphy (Desert) Hot Springs 5152 -5.8 -27.4 Zones 6a, 4a 24
Owyhee Pole Creek Idaho 5660 -4 -29.2 Zones 6b, 4a 30
Owyhee Reynolds 3930 -0.4 -20.2 Zones 6b, 4b 25
Owyhee South Mtn. 6500 3.2 -22 Zones 7a, 4b 30
Owyhee Triangle Idaho 5270 -13 -38.2 Zones 5b, 3a 30
Owyhee Twin Buttes Idaho 3350 1.4 -22 Zones 7a, 4b 30
Power Bull Canyon Idaho 6400 -0.4 -20.2 Zones 6b, 4b 30
Power Crystal Idaho 5064 -7.6 -36.4 Zones 6a, 3a 30
Power Massacre Rocks SP 4195 -5.8 -25.6 Zones 6a, 4a 30
Power Pocatello Rgnl Ap 4478 -11.2 -29.2 Zones 5b, 4a 30
Twin Falls Buhl #2 3800 -0.4 -25.6 Zones 6b, 4a 26
Twin Falls Bull Spring Idaho 5700 -16.6 -36.4 Zones 5a, 3a 30
Twin Falls Castleford 2 N 3825 -2.2 -25.6 Zones 6b, 4a 29
Twin Falls Magic Mountain 6880 -5.8 -27.4 Zones 6a, 4a 30
Twin Falls Trail Gulch Idaho 6000 3.2 -20.2 Zones 7a, 4b 30
Twin Falls Twin Falls Sun Vly Rgnl Ap 4151 -0.4 -14.8 Zones 6b, 5b 23
Twin Falls Wilson Creek 7120 -4 -25.6 Zones 6b, 4a 30
County Weather Station Elev. (feet) Average Annual Minimum Temperature (F) Absolute Minimum (F) Average and Minimum Hardiness Zones Years of Data
Clark Desert Natl Wildlife Range 2914 17.6 3.2 Zones 8b, 7a 30
Clark Echo Bay 1250 26.6 15.8 Zones 9b, 8b 22
Clark Las Vegas Mccarran AP 2130 26.6 10.4 Zones 9b, 8a 30
Clark Las Vegas WFO 2275 24.8 17.6 Zones 9a, 8b 24
Clark Laughlin 605 30.2 21.2 Zones 10a, 9a 30
Clark Mountain Springs Nevada 5600 12.2 3.2 Zones 8a, 7a 22
Clark Mt Charleston Fire Stn 7460 -0.4 -18.4 Zones 6b, 5a 30
Clark Overton 1250 21.2 15.8 Zones 9a, 8b 28
Clark Rd Rock Spg Mt Rch Sp 3780 15.8 3.2 Zones 8b, 7a 28
Clark Red Rock Nevada 3760 17.6 1.4 Zones 8b, 7a 30
Clark Searchlight 3540 21.2 8.6 Zones 9a, 7b 30
Elko Antelope Lake Nevada 5460 -2.2 -27.4 Zones 6b, 4a 30
Elko Arthur 4NW 6250 -9.4 -25.6 Zones 6a, 4a 30
Elko Bear Creek 8040 -11.2 -31 Zones 5b, 3b 30
Elko Big Bend 6700 -4 -34.6 Zones 6b, 3b 30
Elko Corral Canyon 8500 -2.2 -23.8 Zones 6b, 4b 30
Elko Crane Springs Nevada 6400 -0.4 -11.2 Zones 6b, 5b 23
Elko Dorsey Basin 8100 -9.4 -20.2 Zones 6a, 4b 30
Elko Draw Creek 7200 -5.8 -31 Zones 6a, 3b 30
Elko Elko Rgnl Ap 5030 -11.2 -32.8 Zones 5b, 3b 30
Elko Fawn Creek 7000 -2.2 -27.4 Zones 6b, 4a 30
Elko Gibbs Rch Jarbidge 24SE 5960 -9.4 -38.2 Zones 6a, 3a 30
Elko Green Mountain 8000 -2.2 -16.6 Zones 6b, 5a 30
Elko Hole-in-Mountain 7900 -4 -20.2 Zones 6b, 4b 30
Elko Jack Creek Upper 7250 -4 -27.4 Zones 6b, 4a 30
Elko Jackpot 5233 -23.8 -29.2 Zones 4b, 4a 30
Elko Jacks Peak 8420 -2.2 -23.8 Zones 6b, 4b 30
Elko Jiggs 2NE 5642 -9.4 -31 Zones 6a, 3b 30
Elko Laurel Draw 6697 -9.4 -31 Zones 6a, 3b 30
Elko Long Hollow Nevada 5820 -2.2 -27.4 Zones 6b, 4a 30
Elko Montello 2NE 4830 -13 -32.8 Zones 5b, 3b 28
Elko Pole Creek R.S. 8330 -5.8 -20.2 Zones 6a, 4b 30
Elko Rock Spring Creek Nevada 5400 -16.6 -36.4 Zones 5a, 3a 30
Elko Ruby Lake NWR 6020 -11.2 -29.2 Zones 5b, 4a 30
Elko S Fk State Rec Area 5270 -13 -27.4 Zones 5b, 4a 27
Elko Seventysix Creek 7100 -5.8 -31 Zones 6a, 3b 30
Elko Spring Gulch Nevada 5470 3.2 -16.6 Zones 7a, 5a 30
Elko Spruce Mountain Nevada 6100 -2.2 -23.8 Zones 6b, 4b 30
Elko Taylor Canyon 6200 -18.4 -36.4 Zones 5a, 3a 30
Elko Wild Horse Rsvr 6239 -27.4 -41.8 Zones 4a, 2b 30
Eureka Beowawe 49S U of N Rch 5740 -11.2 -31 Zones 5b, 3b 30
Eureka Beowawe 4700 -13 -43.6 Zones 5b, 2b 30
Eureka Coils Creek Nevada 6800 -5.8 -20.2 Zones 6a, 4b 30
Eureka Combs Canyon Nevada 6590 -5.8 -23.8 Zones 6a, 4b 30
Eureka Diamond Peak 8033 -4 -20.2 Zones 6b, 4b 30
Eureka Diamond Valley - Eureka 14NNW 5890 -14.8 -34.6 Zones 5b, 3b 24
Eureka Eureka 6430 -5.8 -20.2 Zones 6a, 4b 30
Eureka Pine Valley - Carlin 20S 5176 -14.8 -40 Zones 5b, 3a 27
Lincoln Caliente 4379 1.4 -18.4 Zones 7a, 5a 30
Lincoln Coyote Wash Nevada 5720 -0.4 -14.8 Zones 6b, 5b 30
Lincoln Hiko 3900 10.4 -11.2 Zones 8a, 5b 30
Lincoln Immigration Wash Nevada 6230 1.4 -16.6 Zones 7a, 5a 30
Lincoln Kane Springs Nevada 4590 19.4 3.2 Zones 8b, 7a 30
Lincoln Pioche 5990 3.2 -7.6 Zones 7a, 6a 24
Nye Amargosa Farms Garey 2450 17.6 6.8 Zones 8b, 7b 25
Nye Blue Eagle Rch Currant 12SSW 4678 -4 -22 Zones 6b, 4b 30
Nye Currant Creek Nevada 5580 3.2 -9.4 Zones 7a, 6a 30
Nye Mercury Desert Rock RP 3230 19.4 6.8 Zones 8b, 7b 30
Nye Pahrump 4 NW 2573 14 -2.2 Zones 8a, 6b 30
Nye Pancake Nevada 5200 -9.4 -25.6 Zones 6a, 4a 30
White Pine Alligator Ridge Nevada 6560 -0.4 -16.6 Zones 6b, 5a 30
White Pine Berry Creek 9100 -9.4 -18.4 Zones 6a, 5a 30
White Pine Cedar Pass Nevada 7185 -2.2 -18.4 Zones 6b, 5a 30
White Pine Ely Yelland Fld Ap 6262 -14.8 -29.2 Zones 5b, 4a 30
White Pine Great Basin NP 6850 -2.2 -18.4 Zones 6b, 5a 30
White Pine Lages 5960 -11.2 -25.6 Zones 5b, 4a 30
White Pine Lund 5546 -7.6 -20.2 Zones 6a, 4b 30
White Pine Mcgill 6270 -9.4 -23.8 Zones 6a, 4b 30
White Pine Ruth 6858 -18.4 -34.6 Zones 5a, 3b 30
County Weather Station Elev. (feet) Average Annual Minimum Temperature (F) Absolute Minimum (F) Average and Minimum Hardiness Zones Years of Data
Cibola Cubero 6195 -2.2 -27.4 Zones 6b, 4a 30
Cibola El Morro Natl Mon 7223 -13 -31 Zones 5b, 3b 30
Cibola Grants Ap 6520 -16.6 -32.8 Zones 5a, 3b 28
San Juan Aztec Ruins Natl. Monu. 5644 -2.2 -18.4 Zones 6b, 5a 30
San Juan Bloomfield 3 SE 5806 3.2 -16.6 Zones 7a, 5a 29
San Juan Chaco Canyon Natl. Monu. 6174 -9.4 -36.4 Zones 6a, 3a 30
San Juan Farmington Ag Sci Cnt 5625 1.4 -16.6 Zones 7a, 5a 30
County Weather Station Elev. (feet) Average Annual Minimum Temperature (F) Absolute Minimum (F) Average and Minimum Hardiness Zones Years of Data
Carbon Baggs 6319 -22 -40 Zones 4b, 3a 30
Carbon Battle Mountain 7440 -14.8 -29.2 Zones 5b, 4a 30
Carbon Cow Creek Wyoming 7234 -11.2 -27.4 Zones 5b, 4a 30
Carbon Divide Peak 8880 -11.2 -32.8 Zones 5b, 3b 30
Carbon Elk Mtn 7265 -20.2 -38.2 Zones 4b, 3a 25
Carbon Medicine Bow 6635 -22 -43.6 Zones 4b, 2b 28
Carbon North French Creek 10130 -18.4 -36.4 Zones 5a, 3a 30
Carbon Old Battle 10000 10000 -13 -36.4 Zones 5b, 3a 30
Carbon Rawlins Muni AP 6736 -20.2 -36.4 Zones 4b, 3a 30
Carbon Sand Lake 10050 -18.4 -25.6 Zones 5a, 4a 30
Carbon Sandstone RS 8150 -14.8 -29.2 Zones 5b, 4a 30
Carbon Shirley Basin 7057 -32.8 -49 Zones 3b, 2a 30
Carbon South Brush Creek 8440 -20.2 -36.4 Zones 4b, 3a 30
Carbon Webber Springs 9250 -16.6 -25.6 Zones 5a, 4a 30
Fremont Anderson Ridge Wyoming 8120 -14.8 -36.4 Zones 5b, 3a 30
Fremont Boysen Dam 4875 -16.6 -29.2 Zones 5a, 4a 30
Fremont Burris 6125 -22 -45.4 Zones 4b, 2a 30
Fremont Burroughs Creek 8750 -23.8 -38.2 Zones 4b, 3a 30
Fremont Camp Creek Wyoming 7380 -13 -34.6 Zones 5b, 3b 30
Fremont Cold Springs 9630 -18.4 -34.6 Zones 5a, 3b 30
Fremont Dubois 6955 -22 -41.8 Zones 4b, 2b 30
Fremont Hobbs Park 10100 -22 -34.6 Zones 4b, 3b 30
Fremont Jeffrey City 6322 -27.4 -45.4 Zones 4a, 2a 30
Fremont Lander Hunt Fld Ap 5592 -18.4 -34.6 Zones 5a, 3b 30
Fremont Little Warm 9370 -23.8 -52.6 Zones 4b, 1b 30
Fremont Riverton 4955 -22 -41.8 Zones 4b, 2b 30
Fremont St. Lawrence 8620 -22 -38.2 Zones 4b, 3a 30
Fremont Townsend Creek 8700 -25.6 -40 Zones 4a, 3a 30
Lincoln Afton 6248 -20.2 -36.4 Zones 4b, 3a 30
Lincoln Bedford 3 SE 6345 -22 -36.4 Zones 4b, 3a 30
Lincoln Blind Bull Sum 8650 -14.8 -31 Zones 5b, 3b 30
Lincoln Cottonwood Creek 7670 -14.8 -29.2 Zones 5b, 4a 30
Lincoln Fontenelle Dam 6480 -29.2 -45.4 Zones 4a, 2a 30
Lincoln Fossil Butte 6785 -27.4 -45.4 Zones 4a, 2a 30
Lincoln Hams Fork 7840 -14.8 -29.2 Zones 5b, 4a 30
Lincoln Indian Creek 9425 -11.2 -29.2 Zones 5b, 4a 30
Lincoln Kemmerer 2N 6937 -23.8 -38.2 Zones 4b, 3a 30
Lincoln Salt River Summit 7760 -9.4 -27.4 Zones 6a, 4a 30
Lincoln Spring Creek Divide 9000 -13 -29.2 Zones 5b, 4a 30
Lincoln Willow Creek 8380 -9.4 -29.2 Zones 6a, 4a 30
Sublette Big Piney Marbleton Ap 6970 -29.2 -47.2 Zones 4a, 2a 30
Sublette Big Sandy Opening 9080 -27.4 -38.2 Zones 4a, 3a 30
Sublette Boulder Rearing Stn 6940 -32.8 -52.6 Zones 3b, 1b 30
Sublette Daniel Fish Hatchery 7340 -31 -50.8 Zones 3b, 1b 30
Sublette East Rim Divide 7930 -11.2 -31 Zones 5b, 3b 30
Sublette Kendall R.S. 7740 -23.8 -38.2 Zones 4b, 3a 30
Sublette Loomis Park 8240 -22 -36.4 Zones 4b, 3a 30
Sublette New Fork Lake 8340 -18.4 -32.8 Zones 5a, 3b 30
Sublette Snider Basin 8060 -25.6 -34.6 Zones 4a, 3b 30
Sublette Triple Peak 8500 -22 -34.6 Zones 4b, 3b 30
Sweetwater Rock Springs Airport 6741 -14.8 -29.2 Zones 5b, 4a 30
Teton Alta 1 NNW 6440 -16.6 -41.8 Zones 5a, 2b 30
Teton Base Camp 7030 -20.2 -34.6 Zones 4b, 3b 30
Teton Darwin Rch 8190 -38.2 -50.8 Zones 3a, 1b 30
Teton Granite Creek 6770 -25.6 -38.2 Zones 4a, 3a 30
Teton Grassy Lake 7265 -23.8 -31 Zones 4b, 3b 30
Teton Gros Ventre Summit 8750 -27.4 -38.2 Zones 4a, 3a 30
Teton Jackson 6210 -25.6 -40 Zones 4a, 3a 30
Teton Lake Yellowstone 7892 -29.2 -43.6 Zones 4a, 2b 30
Teton Lewis Lake Divide 7850 -20.2 -34.6 Zones 4b, 3b 30
Teton Moose 6444 -25.6 -41.8 Zones 4a, 2b 30
Teton Moran 5WNW 6798 -25.6 -36.4 Zones 4a, 3a 30
Teton Old Faithful 7351 -34.6 -45.4 Zones 3b, 2a 30
Teton Phillips Bench 8200 -13 -31 Zones 5b, 3b 30
Teton Snake Rvr 6882 -31 -43.6 Zones 3b, 2b 30
Teton Togwotee Pass 9580 -18.4 -34.6 Zones 5a, 3b 30
Teton Two Ocean Plateau 9240 -20.2 -34.6 Zones 4b, 3b 30
Uinta Church Buttes Gas Plant 7079 -11.2 -40 Zones 5b, 3a 30
Uinta Evanston 1 E 6825 -14.8 -31 Zones 5b, 3b 30
Uinta Mountain View 6800 -13 -41.8 Zones 5b, 2b 29