| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | 25d - Flat to Rolling Plains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 80648 - Nunn, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 18 | 25 | 32 | 42 | 50 | 56 | 54 | 45 | 34 | 23 | 15 | 34 |
| Avg Max Temp (°F) | 40 | 45 | 52 | 60 | 70 | 81 | 87 | 85 | 76 | 64 | 49 | 41 | 62 |
| Avg Precip (In.) | .25 | .31 | .9 | 1.67 | 2.13 | 1.7 | 1.66 | 1.46 | .9 | .9 | .62 | .33 | 12.85 |