| 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 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 70c - Pittsburgh Low Plateau |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 15825 - Brookville, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 15 | 24 | 32 | 43 | 52 | 57 | 55 | 48 | 37 | 29 | 21 | 36 |
| Avg Max Temp (°F) | 32 | 35 | 46 | 58 | 69 | 76 | 80 | 79 | 72 | 61 | 48 | 37 | 58 |
| Avg Precip (In.) | 2.97 | 2.58 | 3.5 | 3.55 | 4.06 | 5.32 | 4.81 | 4.06 | 4.23 | 3.13 | 3.55 | 3.38 | 45.13 |