Towanda, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.1 °C (low) to 15.2 °C (high). Annual precipitation averages 957.1 Millimeters. Towanda is located in USDA Plant Hardiness Zone 6b. 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 | -8.7 °C | 1 °C | 60.71 mm |
| February | -8.4 °C | 2.4 °C | 45.47 mm |
| March | -4.4 °C | 7.1 °C | 76.96 mm |
| April | 1.2 °C | 14.8 °C | 84.07 mm |
| May | 7.5 °C | 21.5 °C | 82.55 mm |
| June | 12.6 °C | 26.1 °C | 96.27 mm |
| July | 14.9 °C | 28.4 °C | 97.28 mm |
| August | 14.3 °C | 27.6 °C | 95.76 mm |
| September | 10.4 °C | 23.6 °C | 92.46 mm |
| October | 4.1 °C | 16.6 °C | 92.71 mm |
| November | -1.1 °C | 9.6 °C | 65.53 mm |
| December | -4.9 °C | 3.7 °C | 67.31 mm |
| Annual | 3.1 °C | 15.2 °C | 957.08 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |