Montoursville, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.9 °C (low) to 16.3 °C (high). Annual precipitation averages 1082.8 Millimeters. Montoursville 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 °C | 1.9 °C | 78.74 mm |
| February | -6.3 °C | 3.7 °C | 60.2 mm |
| March | -2.2 °C | 8.9 °C | 82.55 mm |
| April | 3.6 °C | 16.4 °C | 91.44 mm |
| May | 9.3 °C | 22.5 °C | 92.46 mm |
| June | 14.3 °C | 27 °C | 96.52 mm |
| July | 16.8 °C | 29.4 °C | 111.25 mm |
| August | 16 °C | 28.4 °C | 99.31 mm |
| September | 11.9 °C | 24.4 °C | 110.74 mm |
| October | 5.6 °C | 17.6 °C | 100.33 mm |
| November | 0.3 °C | 10.6 °C | 73.91 mm |
| December | -3.7 °C | 4.4 °C | 85.34 mm |
| Annual | 4.9 °C | 16.3 °C | 1082.79 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |