Richville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.2 °F (low) to 54.6 °F (high). Annual precipitation averages 39.8 Inches. Richville is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.3 °F | 26.9 °F | 2.88 in. |
| February | 9.2 °F | 29.4 °F | 2.15 in. |
| March | 19.8 °F | 38.4 °F | 2.49 in. |
| April | 33.1 °F | 53.2 °F | 3.2 in. |
| May | 44.8 °F | 66.5 °F | 3.4 in. |
| June | 54.5 °F | 75.1 °F | 4.0 in. |
| July | 59.7 °F | 79.5 °F | 3.63 in. |
| August | 57.9 °F | 78.5 °F | 3.4 in. |
| September | 49.8 °F | 71.4 °F | 3.64 in. |
| October | 39.1 °F | 57.8 °F | 4.48 in. |
| November | 28.8 °F | 45.2 °F | 3.46 in. |
| December | 17.6 °F | 33.0 °F | 3.06 in. |
| Annual | 35.2 °F | 54.6 °F | 39.79 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |