| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 21 - May 31 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 62d - Unglaciated Allegheney High Plateau |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 16233 - Leeper, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 15 | 23 | 32 | 43 | 52 | 56 | 55 | 48 | 37 | 29 | 20 | 35 |
| Avg Max Temp (°F) | 32 | 35 | 45 | 57 | 69 | 77 | 80 | 79 | 72 | 60 | 47 | 36 | 57 |
| Avg Precip (In.) | 3.06 | 2.5 | 3.44 | 3.77 | 4.04 | 5.17 | 4.7 | 3.95 | 4.25 | 3.3 | 3.8 | 3.39 | 45.38 |