| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F | |
| 2012 Hardiness Zone: | 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 | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 49068 - Marshall, MI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 17 | 25 | 36 | 46 | 56 | 60 | 58 | 51 | 40 | 31 | 21 | 38 |
| Avg Max Temp (°F) | 30 | 34 | 45 | 58 | 70 | 79 | 83 | 80 | 73 | 61 | 47 | 35 | 58 |
| Avg Precip (In.) | 1.86 | 1.6 | 2.53 | 3.34 | 3.52 | 3.61 | 3.5 | 3.67 | 3.67 | 2.78 | 2.92 | 2.47 | 35.47 |