Tunkhannock, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.8 °C (low) to 15.5 °C (high). Annual precipitation averages 1095.8 Millimeters. Tunkhannock is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.9 °C | 1.5 °C | 75.69 mm |
| February | -7.6 °C | 3 °C | 60.45 mm |
| March | -3.2 °C | 7.7 °C | 85.6 mm |
| April | 2.4 °C | 15.1 °C | 92.71 mm |
| May | 8 °C | 21.5 °C | 95.25 mm |
| June | 13.1 °C | 26.1 °C | 105.92 mm |
| July | 15.4 °C | 28.6 °C | 113.79 mm |
| August | 14.7 °C | 27.6 °C | 105.92 mm |
| September | 10.8 °C | 23.7 °C | 103.12 mm |
| October | 4.6 °C | 16.8 °C | 102.11 mm |
| November | -0.4 °C | 10.3 °C | 73.91 mm |
| December | -4.4 °C | 4.4 °C | 81.28 mm |
| Annual | 3.8 °C | 15.5 °C | 1095.75 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |