Keeseville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2 °C (low) to 12.9 °C (high). Annual precipitation averages 840 Millimeters. Keeseville 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 | -12.8 °C | -2.5 °C | 47.75 mm |
| February | -11.7 °C | -0.7 °C | 42.16 mm |
| March | -6.4 °C | 4.3 °C | 56.13 mm |
| April | 0.8 °C | 12.2 °C | 65.79 mm |
| May | 7.5 °C | 19.6 °C | 73.15 mm |
| June | 12.7 °C | 24.4 °C | 106.17 mm |
| July | 15.4 °C | 27.1 °C | 86.61 mm |
| August | 14.4 °C | 26.1 °C | 80.26 mm |
| September | 10 °C | 22.1 °C | 70.61 mm |
| October | 3.8 °C | 14.4 °C | 86.11 mm |
| November | -1.8 °C | 7.4 °C | 67.82 mm |
| December | -8 °C | 0.9 °C | 57.4 mm |
| Annual | 2 °C | 12.9 °C | 839.96 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 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |