Montour Falls, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4 °C (low) to 15.4 °C (high). Annual precipitation averages 802.9 Millimeters. Montour Falls is located in USDA Plant Hardiness Zone 6b. 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 | -8 °C | 1.4 °C | 39.88 mm |
| February | -7.4 °C | 2.7 °C | 34.29 mm |
| March | -3.5 °C | 7.3 °C | 55.12 mm |
| April | 1.9 °C | 15 °C | 69.34 mm |
| May | 8.2 °C | 21.7 °C | 64.01 mm |
| June | 13.5 °C | 25.8 °C | 92.2 mm |
| July | 15.9 °C | 28.8 °C | 90.42 mm |
| August | 15.2 °C | 27.9 °C | 85.09 mm |
| September | 11.2 °C | 23.4 °C | 95.5 mm |
| October | 5.4 °C | 16.8 °C | 77.98 mm |
| November | 0 °C | 10.1 °C | 50.55 mm |
| December | -4.3 °C | 4.1 °C | 48.51 mm |
| Annual | 4 °C | 15.4 °C | 802.89 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |