| 2023 Hardiness Zone: | 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 5a: -20F to -15F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | 25d - Flat to Rolling Plains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 80751 - Sterling, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 12 | 18 | 25 | 33 | 44 | 54 | 59 | 58 | 47 | 35 | 22 | 14 | 35 |
| Avg Max Temp (°F) | 38 | 46 | 54 | 63 | 72 | 84 | 90 | 88 | 79 | 67 | 50 | 41 | 64 |
| Avg Precip (In.) | .39 | .31 | 1.11 | 1.37 | 2.81 | 2.83 | 2.61 | 1.92 | 1.2 | .88 | .6 | .31 | 16.34 |