| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F Zone 4b: -25°F to -20°F Zone 6a: -10°F to -5°F Zone 4a: -30°F to -25°F | |
| 2012 Hardiness Zone: | Zone 3b: -35°F to -30°F Zone 5b: -15°F to -10°F Zone 4b: -25°F to -20°F Zone 5a: -20°F to -15°F Zone 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F | |
| Average First Frost Date: | September 11 - 20 | |
| Average Last Frost Date: | June 1 - 10 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 21h - Volcanic Mid-Elevation Forests and Shrublands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 80820 - Guffey, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 4 | 6 | 14 | 21 | 30 | 38 | 43 | 42 | 35 | 24 | 13 | 5 | 23 |
| Avg Max Temp (°F) | 34 | 37 | 42 | 48 | 59 | 69 | 74 | 72 | 66 | 56 | 41 | 35 | 53 |
| Avg Precip (In.) | .39 | .43 | 1.05 | 1.34 | 1.8 | 1.66 | 2.72 | 2.93 | 1.45 | .97 | .68 | .49 | 15.92 |