Wyoming Calculated Average and Minimum USDA Hardiness Zones

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