Canajoharie, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.6 °C (low) to 14.9 °C (high). Annual precipitation averages 1056.6 Millimeters. Canajoharie is located in USDA Plant Hardiness Zone 5b. 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 | -9.3 °C | -0.1 °C | 73.66 mm |
| February | -8.6 °C | 1.5 °C | 64.26 mm |
| March | -4.3 °C | 6.2 °C | 76.71 mm |
| April | 2.2 °C | 14.6 °C | 88.39 mm |
| May | 8.3 °C | 21.5 °C | 85.09 mm |
| June | 13.2 °C | 26.1 °C | 104.9 mm |
| July | 16.2 °C | 28.7 °C | 111.76 mm |
| August | 15.2 °C | 27.7 °C | 109.22 mm |
| September | 11.3 °C | 23.8 °C | 85.6 mm |
| October | 5.1 °C | 16.8 °C | 97.03 mm |
| November | -0.6 °C | 9.1 °C | 78.74 mm |
| December | -5.5 °C | 2.9 °C | 81.28 mm |
| Annual | 3.6 °C | 14.9 °C | 1056.64 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°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 |