Wilcox, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2 °C (low) to 14 °C (high). Annual precipitation averages 1181.1 Millimeters. Wilcox is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.6 °C | -0.2 °C | 90.42 mm |
| February | -9.3 °C | 1.4 °C | 67.06 mm |
| March | -5.5 °C | 6.4 °C | 85.34 mm |
| April | 0.3 °C | 14.2 °C | 102.36 mm |
| May | 6.1 °C | 20.4 °C | 108.2 mm |
| June | 11 °C | 24.4 °C | 115.32 mm |
| July | 13.3 °C | 26.6 °C | 115.57 mm |
| August | 12.6 °C | 25.8 °C | 106.68 mm |
| September | 9 °C | 22.2 °C | 102.11 mm |
| October | 3.1 °C | 15.6 °C | 99.31 mm |
| November | -1.7 °C | 8.3 °C | 95 mm |
| December | -5.8 °C | 2.3 °C | 93.73 mm |
| Annual | 2 °C | 14 °C | 1181.1 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |