| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F 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 4b: -25°F to -20°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Sep.1 - Sep. 10 |
| Average Last Frost Date: | Jun. 21 - Jun. 30 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 21c - Crystalline Mid-Elevation Forests and Shrublands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 80439 - Evergreen, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 9 | 11 | 17 | 23 | 31 | 38 | 44 | 43 | 35 | 26 | 16 | 10 | 25 |
| Avg Max Temp (°F) | 38 | 41 | 45 | 52 | 61 | 71 | 77 | 75 | 68 | 58 | 45 | 39 | 56 |
| Avg Precip (In.) | .67 | .86 | 2.1 | 2.94 | 2.76 | 1.85 | 2.47 | 2.4 | 1.6 | 1.28 | 1.4 | .87 | 21.21 |