| 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. 1 - Oct. 10 |
| Average Last Frost Date: | May 11 - May 20 |
| 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 49047 - Dowagiac, 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 | 45 | 58 | 70 | 79 | 83 | 81 | 74 | 62 | 48 | 36 | 58 |
| Avg Precip (In.) | 2.54 | 1.96 | 2.64 | 3.49 | 3.67 | 3.69 | 3.58 | 3.82 | 4.05 | 3.42 | 3.41 | 3.08 | 39.35 |