Glen Park, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.9 °C (low) to 12.9 °C (high). Annual precipitation averages 1066.8 Millimeters. Glen Park is located in USDA Plant Hardiness Zone 5a. 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 | -11.8 °C | -1.6 °C | 93.22 mm |
| February | -11.4 °C | -0.7 °C | 69.6 mm |
| March | -5.8 °C | 4 °C | 71.63 mm |
| April | 1.3 °C | 11.9 °C | 87.12 mm |
| May | 8 °C | 19.1 °C | 80.26 mm |
| June | 13.3 °C | 23.8 °C | 84.84 mm |
| July | 16.4 °C | 26.4 °C | 78.23 mm |
| August | 15.6 °C | 25.7 °C | 85.34 mm |
| September | 11.1 °C | 22 °C | 91.44 mm |
| October | 5 °C | 14.8 °C | 124.46 mm |
| November | -0.8 °C | 8.1 °C | 103.63 mm |
| December | -6.6 °C | 1.8 °C | 97.03 mm |
| Annual | 2.9 °C | 12.9 °C | 1066.8 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 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 |