Clayville, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.5 °F (low) to 55.9 °F (high). Annual precipitation averages 48.6 Inches. Clayville is located in USDA Plant Hardiness Zone 5b. 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 | 12.4 °F | 29.2 °F | 3.08 in. |
| February | 15.2 °F | 32.1 °F | 2.8 in. |
| March | 21.4 °F | 39.8 °F | 3.5 in. |
| April | 33.9 °F | 54.6 °F | 4.18 in. |
| May | 45.3 °F | 67.6 °F | 4.01 in. |
| June | 54.2 °F | 76.4 °F | 4.87 in. |
| July | 58.8 °F | 80.8 °F | 4.88 in. |
| August | 57.2 °F | 79.1 °F | 4.49 in. |
| September | 49.9 °F | 72.1 °F | 4.34 in. |
| October | 39.4 °F | 59.1 °F | 4.72 in. |
| November | 29.7 °F | 45.7 °F | 4.0 in. |
| December | 20.4 °F | 34.5 °F | 3.74 in. |
| Annual | 36.5 °F | 55.9 °F | 48.61 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |