Franklinville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.5 °C (low) to 13 °C (high). Annual precipitation averages 1138.2 Millimeters. Franklinville is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.4 °C | -0.9 °C | 83.82 mm |
| February | -10.3 °C | 0.4 °C | 63.5 mm |
| March | -6.5 °C | 5.1 °C | 76.71 mm |
| April | -0.3 °C | 12.3 °C | 88.9 mm |
| May | 5.8 °C | 19.3 °C | 97.79 mm |
| June | 10.7 °C | 23.7 °C | 108.71 mm |
| July | 13.1 °C | 25.8 °C | 115.57 mm |
| August | 12.3 °C | 25 °C | 101.85 mm |
| September | 8.7 °C | 21.4 °C | 108.71 mm |
| October | 2.8 °C | 14.7 °C | 108.46 mm |
| November | -1.9 °C | 7.8 °C | 92.96 mm |
| December | -6.4 °C | 1.9 °C | 91.19 mm |
| Annual | 1.5 °C | 13 °C | 1138.17 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |