| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 55d - Pre-Wisconsinan Drift Plains |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 47229 - Crothersville, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 23 | 32 | 41 | 52 | 61 | 65 | 62 | 55 | 42 | 34 | 25 | 43 |
| Avg Max Temp (°F) | 39 | 44 | 55 | 66 | 75 | 83 | 87 | 86 | 79 | 68 | 55 | 43 | 65 |
| Avg Precip (In.) | 3.12 | 2.86 | 4.06 | 4.37 | 4.81 | 4.15 | 4.42 | 4.11 | 3.06 | 3.02 | 3.79 | 3.37 | 45.14 |