| 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 4a: -30°F to -25°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 3b: -35F to -30F | |
| Average First Frost Date: | Aug. 1 - Aug. 10 | |
| Average Last Frost Date: | Jun. 21 - Jun. 30 | |
| Koppen-Geiger Climate Zone: | Dfc - Subarctic With Cool Summers And Year Around Rainfall | |
| Ecoregion: | 21i - Sagebrush Parks | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 80480 - Walden, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 4 | 6 | 14 | 21 | 28 | 36 | 41 | 39 | 31 | 22 | 13 | 6 | 22 |
| Avg Max Temp (°F) | 30 | 33 | 40 | 49 | 60 | 71 | 78 | 76 | 67 | 56 | 39 | 31 | 52 |
| Avg Precip (In.) | .64 | .62 | .84 | 1.09 | 1.51 | 1.04 | 1.31 | 1.07 | 1.23 | .9 | .85 | .61 | 11.72 |