| 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 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 55b - Loamy High Lime Till Plains |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 47394 - Winchester, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 19 | 29 | 39 | 50 | 59 | 62 | 60 | 53 | 41 | 32 | 22 | 40 |
| Avg Max Temp (°F) | 32 | 37 | 48 | 60 | 71 | 80 | 84 | 82 | 76 | 64 | 50 | 37 | 60 |
| Avg Precip (In.) | 1.99 | 1.78 | 2.92 | 3.67 | 4.13 | 4.33 | 4.22 | 3.63 | 2.82 | 2.64 | 3.2 | 2.74 | 38.07 |