Masonville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.6 °F (low) to 55.6 °F (high). Annual precipitation averages 46.8 Inches. 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 | 10.9 °F | 30.4 °F | 3.19 in. |
| February | 12.3 °F | 32.3 °F | 2.57 in. |
| March | 17.9 °F | 40.0 °F | 3.5 in. |
| April | 29.4 °F | 54.7 °F | 3.96 in. |
| May | 40.5 °F | 67.1 °F | 3.93 in. |
| June | 50.5 °F | 74.7 °F | 4.89 in. |
| July | 60.1 °F | 78.7 °F | 4.53 in. |
| August | 52.8 °F | 77.5 °F | 4.6 in. |
| September | 46.6 °F | 71.3 °F | 4.2 in. |
| October | 36.8 °F | 58.5 °F | 4.39 in. |
| November | 26.9 °F | 46.3 °F | 3.43 in. |
| December | 18.8 °F | 35.5 °F | 3.57 in. |
| Annual | 33.6 °F | 55.6 °F | 46.76 in. |
| 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 : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |