| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | 25d - Flat to Rolling Plains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 80734 - Holyoke, CO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 18 | 25 | 35 | 45 | 56 | 61 | 59 | 49 | 36 | 24 | 16 | 37 |
| Avg Max Temp (°F) | 39 | 45 | 53 | 62 | 71 | 83 | 88 | 86 | 78 | 66 | 49 | 42 | 64 |
| Avg Precip (In.) | .49 | .49 | 1.27 | 1.77 | 3.35 | 2.86 | 2.66 | 2.15 | 1.11 | .89 | .72 | .37 | 18.13 |