| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | 20b - Shale and Sedimentary Basins | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 81401 - Montrose, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 19 | 28 | 34 | 42 | 50 | 56 | 54 | 46 | 35 | 25 | 16 | 35 |
| Avg Max Temp (°F) | 37 | 43 | 53 | 61 | 71 | 82 | 87 | 85 | 77 | 64 | 48 | 38 | 62 |
| Avg Precip (In.) | .57 | .43 | .78 | .84 | 1.09 | .67 | 1.11 | 1.18 | 1.14 | 1.2 | .92 | .62 | 10.53 |