Clarence, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.3 °F (low) to 56.9 °F (high). Annual precipitation averages 40.7 Inches. Clarence is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.6 °F | 32.2 °F | 3.15 in. |
| February | 17.9 °F | 33.6 °F | 2.39 in. |
| March | 24.7 °F | 41.9 °F | 2.96 in. |
| April | 35.5 °F | 55.0 °F | 3.35 in. |
| May | 46.8 °F | 67.4 °F | 3.34 in. |
| June | 56.5 °F | 75.8 °F | 3.78 in. |
| July | 61.2 °F | 80.0 °F | 3.43 in. |
| August | 59.9 °F | 79.2 °F | 3.31 in. |
| September | 52.8 °F | 72.6 °F | 4.14 in. |
| October | 42.3 °F | 60.0 °F | 3.94 in. |
| November | 32.7 °F | 47.8 °F | 3.54 in. |
| December | 24.2 °F | 37.4 °F | 3.35 in. |
| Annual | 39.3 °F | 56.9 °F | 40.68 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |