East Glenville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.9 °C (low) to 14.4 °C (high). Annual precipitation averages 1099.8 Millimeters. East Glenville is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.3 °C | -0.2 °C | 77.22 mm |
| February | -8.7 °C | 1.4 °C | 64.52 mm |
| March | -4.1 °C | 6.3 °C | 81.79 mm |
| April | 2.4 °C | 14.2 °C | 89.41 mm |
| May | 8.9 °C | 20.7 °C | 91.19 mm |
| June | 13.9 °C | 25.3 °C | 114.55 mm |
| July | 16.6 °C | 27.9 °C | 111.76 mm |
| August | 15.8 °C | 26.8 °C | 103.63 mm |
| September | 11.4 °C | 22.8 °C | 92.71 mm |
| October | 5.1 °C | 15.7 °C | 109.98 mm |
| November | -0.5 °C | 8.9 °C | 76.2 mm |
| December | -5.3 °C | 2.7 °C | 86.87 mm |
| Annual | 3.9 °C | 14.4 °C | 1099.83 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |