| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°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 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | 26e - Piedmont Plains and Tablelands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 81240 - Penrose, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 21 | 28 | 35 | 44 | 53 | 58 | 57 | 48 | 38 | 26 | 20 | 37 |
| Avg Max Temp (°F) | 48 | 52 | 57 | 65 | 73 | 84 | 90 | 87 | 79 | 69 | 55 | 48 | 67 |
| Avg Precip (In.) | .34 | .33 | .73 | 1.43 | 1.81 | 1.33 | 2.04 | 2.12 | .95 | .74 | .63 | .32 | 12.76 |