Little Valley, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.8 °C (low) to 13 °C (high). Annual precipitation averages 1224.8 Millimeters. Little Valley is located in USDA Plant Hardiness Zone 5b. 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 °C | -1.1 °C | 97.54 mm |
| February | -9.9 °C | 0.2 °C | 65.79 mm |
| March | -6.2 °C | 4.8 °C | 83.57 mm |
| April | -0.1 °C | 12.6 °C | 97.28 mm |
| May | 6.2 °C | 19.4 °C | 95.76 mm |
| June | 10.9 °C | 23.7 °C | 117.6 mm |
| July | 13.4 °C | 25.8 °C | 131.57 mm |
| August | 12.6 °C | 25 °C | 110.24 mm |
| September | 9.1 °C | 21.5 °C | 113.28 mm |
| October | 3.2 °C | 14.7 °C | 112.01 mm |
| November | -1.7 °C | 7.6 °C | 100.84 mm |
| December | -6 °C | 1.8 °C | 99.31 mm |
| Annual | 1.8 °C | 13 °C | 1224.79 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 5b : -26.1°C to -23.3°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 |