| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 2012 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 |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Sep.1 - Sep. 10 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate |
| Ecoregion: | 21d - Foothills and Shrublands |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 80512 - Bellvue, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 19 | 25 | 33 | 42 | 50 | 55 | 54 | 45 | 34 | 23 | 16 | 34 |
| Avg Max Temp (°F) | 40 | 45 | 51 | 60 | 69 | 79 | 85 | 83 | 75 | 63 | 49 | 41 | 62 |
| Avg Precip (In.) | .44 | .42 | 1.41 | 2.14 | 2.73 | 2.01 | 1.9 | 1.43 | 1.44 | .95 | .8 | .48 | 16.14 |