| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | 20b - Shale and Sedimentary Basins | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 81504 - Grand Junction, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 23 | 32 | 38 | 47 | 56 | 62 | 60 | 51 | 40 | 27 | 18 | 39 |
| Avg Max Temp (°F) | 37 | 46 | 56 | 65 | 75 | 87 | 93 | 90 | 81 | 68 | 51 | 40 | 66 |
| Avg Precip (In.) | .56 | .44 | .94 | .84 | 1.04 | .46 | .71 | .75 | .87 | .99 | .74 | .49 | 8.84 |