Mechanicville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.4 °C (low) to 15.1 °C (high). Annual precipitation averages 1058.9 Millimeters. Mechanicville is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.8 °C | 0.3 °C | 74.68 mm |
| February | -8.1 °C | 2 °C | 50.55 mm |
| March | -3.3 °C | 7 °C | 70.61 mm |
| April | 3.1 °C | 14.8 °C | 84.33 mm |
| May | 9.4 °C | 21.4 °C | 87.88 mm |
| June | 14.4 °C | 26.1 °C | 118.87 mm |
| July | 16.8 °C | 29.3 °C | 112.01 mm |
| August | 16.2 °C | 27.6 °C | 106.43 mm |
| September | 11.8 °C | 23.6 °C | 96.77 mm |
| October | 5.7 °C | 16.4 °C | 101.09 mm |
| November | 0.2 °C | 9.4 °C | 75.44 mm |
| December | -4.7 °C | 3.3 °C | 80.26 mm |
| Annual | 4.4 °C | 15.1 °C | 1058.92 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°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 |