Hortonville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.4 °C (low) to 14.5 °C (high). Annual precipitation averages 1208 Millimeters. Hortonville 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 | -9.9 °C | 0.3 °C | 85.09 mm |
| February | -9.2 °C | 2.1 °C | 65.02 mm |
| March | -5.1 °C | 6.6 °C | 87.12 mm |
| April | 0.8 °C | 14.2 °C | 97.79 mm |
| May | 6.6 °C | 20.7 °C | 105.66 mm |
| June | 11.8 °C | 24.9 °C | 127.76 mm |
| July | 14.5 °C | 27.6 °C | 117.86 mm |
| August | 13.6 °C | 26.5 °C | 107.7 mm |
| September | 9.7 °C | 22.8 °C | 117.86 mm |
| October | 3.3 °C | 16.2 °C | 116.08 mm |
| November | -1.7 °C | 9.1 °C | 83.06 mm |
| December | -6.1 °C | 2.9 °C | 97.03 mm |
| Annual | 2.4 °C | 14.5 °C | 1208.03 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |