| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F |
| Average First Frost Date: | Sep.11 - Sep. 20 |
| Average Last Frost Date: | May 21 - May 31 |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate |
| Ecoregion: | 21c - Crystalline Mid-Elevation Forests and Shrublands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 80133 - Palmer Lake, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 12 | 15 | 20 | 26 | 35 | 45 | 50 | 49 | 40 | 30 | 19 | 14 | 30 |
| Avg Max Temp (°F) | 39 | 43 | 47 | 52 | 62 | 74 | 79 | 77 | 70 | 59 | 46 | 41 | 57 |
| Avg Precip (In.) | .84 | .71 | 1.89 | 2.54 | 2.81 | 2.27 | 2.77 | 2.92 | 1.5 | 1.2 | 1.18 | 1.11 | 21.74 |