| 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 6a: -10F to -5F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 11 - May 20 |
| 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 15801 - Du Bois, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 16 | 24 | 34 | 44 | 53 | 57 | 56 | 49 | 38 | 30 | 21 | 37 |
| Avg Max Temp (°F) | 32 | 35 | 46 | 58 | 69 | 77 | 80 | 79 | 72 | 61 | 47 | 37 | 58 |
| Avg Precip (In.) | 3.01 | 2.66 | 3.52 | 3.47 | 4.02 | 5.06 | 4.25 | 4 | 4 | 3 | 3.45 | 3.29 | 43.72 |