Sherman, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.4 °F (low) to 56.2 °F (high). Annual precipitation averages 47.4 Inches. Sherman is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.4 °F | 30.9 °F | 3.52 in. |
| February | 15.9 °F | 33.2 °F | 2.6 in. |
| March | 22.9 °F | 42.3 °F | 2.62 in. |
| April | 33.4 °F | 55.6 °F | 3.41 in. |
| May | 44.1 °F | 67.4 °F | 4.45 in. |
| June | 52.8 °F | 75.2 °F | 4.41 in. |
| July | 56.8 °F | 79.1 °F | 5.02 in. |
| August | 55.6 °F | 77.6 °F | 3.93 in. |
| September | 49.1 °F | 71.3 °F | 4.78 in. |
| October | 38.8 °F | 58.9 °F | 5.52 in. |
| November | 29.9 °F | 46.4 °F | 3.61 in. |
| December | 22.6 °F | 35.9 °F | 3.55 in. |
| Annual | 36.4 °F | 56.2 °F | 47.42 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |