| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°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 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 49107 - Buchanan, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 19 | 28 | 37 | 48 | 57 | 62 | 60 | 52 | 42 | 32 | 22 | 39 |
| Avg Max Temp (°F) | 31 | 35 | 46 | 58 | 70 | 79 | 83 | 81 | 74 | 62 | 48 | 36 | 59 |
| Avg Precip (In.) | 2.28 | 1.91 | 2.77 | 3.57 | 3.76 | 4.01 | 3.58 | 3.81 | 3.86 | 3.35 | 3.42 | 3.09 | 39.44 |