| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 56b - Elkhart Till Plains |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 49036 - Coldwater, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 18 | 26 | 36 | 47 | 56 | 60 | 58 | 51 | 40 | 31 | 21 | 38 |
| Avg Max Temp (°F) | 31 | 35 | 46 | 59 | 71 | 80 | 83 | 81 | 74 | 62 | 48 | 35 | 59 |
| Avg Precip (In.) | 1.83 | 1.69 | 2.47 | 3.19 | 3.79 | 3.7 | 3.77 | 3.88 | 3.45 | 2.73 | 2.64 | 2.52 | 35.68 |