Gunnison, Utah has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.1 °F (low) to 65.2 °F (high). Annual precipitation averages 9.2 Inches. Gunnison is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.8 °F | 39.2 °F | 0.83 in. |
| February | 20.1 °F | 44.8 °F | 0.64 in. |
| March | 26.5 °F | 55.2 °F | 0.92 in. |
| April | 31.0 °F | 62.8 °F | 1.11 in. |
| May | 38.6 °F | 72.8 °F | 0.99 in. |
| June | 46.4 °F | 84.9 °F | 0.52 in. |
| July | 54.1 °F | 92.3 °F | 0.44 in. |
| August | 52.8 °F | 90.2 °F | 0.52 in. |
| September | 43.1 °F | 81.3 °F | 0.79 in. |
| October | 32.1 °F | 67.5 °F | 0.95 in. |
| November | 22.5 °F | 52.2 °F | 0.71 in. |
| December | 14.9 °F | 39.3 °F | 0.8 in. |
| Annual | 33.1 °F | 65.2 °F | 9.22 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |