Montgomeryville, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.1 °C (low) to 17.2 °C (high). Annual precipitation averages 1217.4 Millimeters. Montgomeryville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.6 °C | 3.7 °C | 84.33 mm |
| February | -4.7 °C | 5.2 °C | 71.12 mm |
| March | -0.9 °C | 10 °C | 101.85 mm |
| April | 4.9 °C | 16.8 °C | 96.52 mm |
| May | 10.3 °C | 22.2 °C | 104.39 mm |
| June | 15.3 °C | 27.2 °C | 111 mm |
| July | 18.1 °C | 29.7 °C | 118.62 mm |
| August | 17.2 °C | 28.8 °C | 113.28 mm |
| September | 13.2 °C | 25.1 °C | 112.52 mm |
| October | 6.7 °C | 18.3 °C | 109.47 mm |
| November | 1.2 °C | 12.2 °C | 83.06 mm |
| December | -2.6 °C | 6.6 °C | 111.25 mm |
| Annual | 6.1 °C | 17.2 °C | 1217.41 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |