| 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. 1 - Oct. 10 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 60a - Glaciated Low Plateau |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 18446 - Nicholson, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 16 | 25 | 35 | 45 | 55 | 59 | 58 | 50 | 39 | 31 | 21 | 37 |
| Avg Max Temp (°F) | 33 | 35 | 46 | 57 | 70 | 78 | 82 | 80 | 73 | 62 | 49 | 38 | 59 |
| Avg Precip (In.) | 2.55 | 2.13 | 2.66 | 3.34 | 3.73 | 4.09 | 3.92 | 3.38 | 3.78 | 3.09 | 3.21 | 2.5 | 38.37 |