Masonville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.9 °C (low) to 13.1 °C (high). Annual precipitation averages 1187.7 Millimeters. Masonville is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.7 °C | -0.9 °C | 81.03 mm |
| February | -10.9 °C | 0.2 °C | 65.28 mm |
| March | -7.8 °C | 4.4 °C | 88.9 mm |
| April | -1.4 °C | 12.6 °C | 100.58 mm |
| May | 4.7 °C | 19.5 °C | 99.82 mm |
| June | 10.3 °C | 23.7 °C | 124.21 mm |
| July | 15.6 °C | 25.9 °C | 115.06 mm |
| August | 11.6 °C | 25.3 °C | 116.84 mm |
| September | 8.1 °C | 21.8 °C | 106.68 mm |
| October | 2.7 °C | 14.7 °C | 111.51 mm |
| November | -2.8 °C | 7.9 °C | 87.12 mm |
| December | -7.3 °C | 1.9 °C | 90.68 mm |
| Annual | 0.9 °C | 13.1 °C | 1187.71 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |