Morrisville, Pennsylvania has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.2 °C (low) to 17.8 °C (high). Annual precipitation averages 1216.2 Millimeters. Morrisville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.5 °C | 3.4 °C | 85.34 mm |
| February | -5.8 °C | 5.1 °C | 72.39 mm |
| March | -1.9 °C | 10.3 °C | 91.19 mm |
| April | 3.3 °C | 17.7 °C | 86.87 mm |
| May | 9.1 °C | 22.7 °C | 112.52 mm |
| June | 14 °C | 26.7 °C | 111.76 mm |
| July | 16.3 °C | 28.8 °C | 108.2 mm |
| August | 15.3 °C | 28.2 °C | 95.5 mm |
| September | 11.6 °C | 24.9 °C | 91.95 mm |
| October | 5.1 °C | 18.4 °C | 81.03 mm |
| November | 0.1 °C | 11.5 °C | 74.17 mm |
| December | -3.7 °C | 5.7 °C | 83.82 mm |
| Annual | 4.7 °C | 17 °C | 1094.74 mm |
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.4 °C | 4.7 °C | 90.42 mm |
| February | -3.7 °C | 6.2 °C | 71.12 mm |
| March | 0.2 °C | 10.6 °C | 110.49 mm |
| April | 5.8 °C | 17.3 °C | 91.44 mm |
| May | 11.2 °C | 22.6 °C | 101.85 mm |
| June | 16.3 °C | 27.6 °C | 112.27 mm |
| July | 19.3 °C | 30.3 °C | 125.73 mm |
| August | 18.4 °C | 29.3 °C | 114.3 mm |
| September | 14.4 °C | 25.7 °C | 101.35 mm |
| October | 7.9 °C | 19.1 °C | 100.84 mm |
| November | 2.3 °C | 13.1 °C | 84.84 mm |
| December | -1.7 °C | 7.4 °C | 111.51 mm |
| Annual | 7.2 °C | 17.8 °C | 1216.16 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |