| 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 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 56h - Interlobate Dead Ice Moraines | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 49283 - Spring Arbor, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 16 | 25 | 36 | 46 | 56 | 60 | 58 | 50 | 40 | 31 | 20 | 38 |
| Avg Max Temp (°F) | 30 | 33 | 44 | 57 | 69 | 79 | 83 | 80 | 73 | 60 | 47 | 34 | 58 |
| Avg Precip (In.) | 1.57 | 1.4 | 2.26 | 3.01 | 3.21 | 3.42 | 3.35 | 3.53 | 3.46 | 2.47 | 2.67 | 2.22 | 32.57 |