Colorado 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
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