| 2023 Hardiness Zone: | 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: | 20c - Semiarid Benchlands and Canyonlands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 81503 - Grand Junction, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 22 | 31 | 37 | 46 | 55 | 61 | 60 | 50 | 39 | 27 | 18 | 38 |
| Avg Max Temp (°F) | 37 | 45 | 56 | 64 | 75 | 86 | 92 | 90 | 81 | 67 | 50 | 40 | 65 |
| Avg Precip (In.) | .59 | .48 | .94 | .85 | 1.04 | .48 | .74 | .78 | .85 | 1.02 | .73 | .54 | 9.04 |