| 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. 21 - Oct. 31 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 55d - Pre-Wisconsinan Drift Plains |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 47041 - Sunman, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 21 | 30 | 39 | 49 | 58 | 62 | 61 | 53 | 41 | 33 | 24 | 41 |
| Avg Max Temp (°F) | 36 | 42 | 52 | 64 | 74 | 81 | 85 | 84 | 77 | 66 | 53 | 41 | 63 |
| Avg Precip (In.) | 2.86 | 2.64 | 3.79 | 4.03 | 4.9 | 4.21 | 4.24 | 3.88 | 2.84 | 2.99 | 3.6 | 3.33 | 43.31 |