| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 20b - Shale and Sedimentary Basins | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 81652 - Silt, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 19 | 27 | 32 | 41 | 48 | 54 | 53 | 44 | 34 | 23 | 15 | 34 |
| Avg Max Temp (°F) | 37 | 44 | 53 | 61 | 71 | 82 | 88 | 86 | 78 | 65 | 47 | 39 | 63 |
| Avg Precip (In.) | 1.08 | .98 | 1.09 | 1.06 | 1.13 | .92 | 1.07 | 1.11 | 1.26 | 1.39 | 1.06 | 1.11 | 13.27 |