| 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 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 62c - Glaciated Allegheney High Plateau | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 18616 - Forksville, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 14 | 23 | 34 | 44 | 53 | 58 | 56 | 49 | 38 | 30 | 19 | 36 |
| Avg Max Temp (°F) | 30 | 33 | 42 | 54 | 67 | 73 | 77 | 76 | 69 | 58 | 46 | 34 | 55 |
| Avg Precip (In.) | 2.53 | 2.34 | 2.97 | 3.38 | 3.7 | 4.33 | 3.56 | 3.22 | 3.9 | 3.03 | 3.33 | 2.71 | 39 |