Weather information for the Gunnison area is provided below. Average temperatures, climate details and current forecasts are included.
Gunnison is high in the Rockies and the weather is often chilly. Temperatures often drop below freezing at night, even in summer. The semi-arid valley receives about five feet of snowfall per year. Mid-summer days are usually pleasant.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ||
| Avg. High | 25 | 31 | 42 | 54 | 65 | 75 | 80 | 78 | 71 | 60 | 43 | 29 | |
| Avg. Low | -6 | 0 | 14 | 22 | 30 | 36 | 42 | 41 | 32 | 22 | 11 | -2 | |
| Precipitation | 0.8 | 0.6 | 0.5 | 0.6 | 0.8 | 0.6 | 1.2 | 1.7 | 1.0 | 0.7 | 0.6 | 0.8 | |



