| 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: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 71d - Outer Bluegrass |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 47012 - Brookville, IN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 21 | 29 | 38 | 49 | 58 | 62 | 61 | 52 | 40 | 32 | 23 | 40 |
| Avg Max Temp (°F) | 36 | 41 | 52 | 64 | 74 | 83 | 86 | 85 | 78 | 67 | 53 | 41 | 63 |
| Avg Precip (In.) | 2.89 | 2.61 | 3.72 | 3.97 | 4.89 | 4.11 | 4.26 | 3.89 | 2.73 | 3 | 3.6 | 3.28 | 42.94 |