Worthville, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.1 °C (low) to 15.3 °C (high). Annual precipitation averages 1178.3 Millimeters. Worthville is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.2 °C | 1.3 °C | 92.71 mm |
| February | -7.8 °C | 2.9 °C | 68.33 mm |
| March | -4 °C | 8 °C | 91.95 mm |
| April | 1.4 °C | 15.7 °C | 102.36 mm |
| May | 7.3 °C | 21.7 °C | 101.6 mm |
| June | 12.3 °C | 25.6 °C | 121.41 mm |
| July | 14.6 °C | 27.6 °C | 120.14 mm |
| August | 13.8 °C | 27.2 °C | 104.9 mm |
| September | 10 °C | 23.4 °C | 104.65 mm |
| October | 3.9 °C | 16.8 °C | 86.36 mm |
| November | -1.1 °C | 9.7 °C | 90.68 mm |
| December | -4.8 °C | 3.7 °C | 93.22 mm |
| Annual | 3.1 °C | 15.3 °C | 1178.31 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |