Belmont, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.4 °C (low) to 14 °C (high). Annual precipitation averages 982.2 Millimeters. Belmont 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 | -10.1 °C | -0.2 °C | 62.74 mm |
| February | -10.1 °C | 1.2 °C | 45.47 mm |
| March | -6.4 °C | 5.9 °C | 64.77 mm |
| April | -0.6 °C | 13.6 °C | 87.12 mm |
| May | 5.4 °C | 20.3 °C | 91.44 mm |
| June | 10.4 °C | 24.8 °C | 104.14 mm |
| July | 12.8 °C | 26.9 °C | 101.09 mm |
| August | 12.2 °C | 26 °C | 96.52 mm |
| September | 8.5 °C | 22.5 °C | 93.47 mm |
| October | 2.7 °C | 15.5 °C | 96.01 mm |
| November | -2 °C | 8.4 °C | 68.83 mm |
| December | -6.4 °C | 2.6 °C | 70.61 mm |
| Annual | 1.4 °C | 14 °C | 982.21 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 |