Utah 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
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