| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5a: -20°F to -15°F Zone 3b: -35°F to -30°F Zone 4a: -30°F to -25°F Zone 4b: -25°F to -20°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5a: -20°F to -15°F Zone 3b: -35°F to -30°F Zone 4a: -30°F to -25°F Zone 4b: -25°F to -20°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F | |
| Average First Frost Date: | Sep.11 - Sep. 20 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 21d - Foothills and Shrublands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 81623 - Carbondale, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 21 | 29 | 33 | 41 | 48 | 52 | 52 | 45 | 35 | 21 | 16 | 34 |
| Avg Max Temp (°F) | 36 | 43 | 51 | 58 | 68 | 77 | 82 | 81 | 73 | 61 | 42 | 37 | 59 |
| Avg Precip (In.) | .85 | .76 | 1.16 | .88 | 1.23 | .8 | 1.24 | 1.21 | 1.35 | 1.33 | .98 | 1.02 | 12.8 |