Morrisonville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.3 °C (low) to 12.7 °C (high). Annual precipitation averages 897.9 Millimeters. Morrisonville is located in USDA Plant Hardiness Zone 5a. 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 | -12.6 °C | -2.8 °C | 54.1 mm |
| February | -11.6 °C | -1.2 °C | 47.75 mm |
| March | -6.2 °C | 3.9 °C | 58.67 mm |
| April | 1.1 °C | 11.8 °C | 74.42 mm |
| May | 7.8 °C | 19.4 °C | 78.99 mm |
| June | 13 °C | 24.1 °C | 102.11 mm |
| July | 15.8 °C | 26.7 °C | 86.87 mm |
| August | 14.8 °C | 25.9 °C | 89.92 mm |
| September | 10.5 °C | 21.8 °C | 74.68 mm |
| October | 4.3 °C | 14.2 °C | 95 mm |
| November | -1.4 °C | 7.3 °C | 69.6 mm |
| December | -7.7 °C | 0.9 °C | 65.79 mm |
| Annual | 2.3 °C | 12.7 °C | 897.9 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |