Germantown, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.6 °C (low) to 16.1 °C (high). Annual precipitation averages 1125 Millimeters. Germantown 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.1 °C | 1.7 °C | 78.74 mm |
| February | -7.2 °C | 3.3 °C | 63.75 mm |
| March | -2.8 °C | 8.4 °C | 83.57 mm |
| April | 3.3 °C | 16.3 °C | 91.19 mm |
| May | 9.2 °C | 22.5 °C | 87.38 mm |
| June | 14.3 °C | 26.9 °C | 110.49 mm |
| July | 16.9 °C | 29.4 °C | 103.89 mm |
| August | 16.3 °C | 28.2 °C | 114.55 mm |
| September | 11.9 °C | 24.2 °C | 106.43 mm |
| October | 5.7 °C | 17.2 °C | 112.27 mm |
| November | 0.3 °C | 10.6 °C | 80.01 mm |
| December | -4.4 °C | 4.2 °C | 92.71 mm |
| Annual | 4.6 °C | 16.1 °C | 1124.98 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |