Chemung, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.5 °F (low) to 57.7 °F (high). Annual precipitation averages 39.4 Inches. Chemung 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.3 °F | 32.1 °F | 2.49 in. |
| February | 14.9 °F | 34.5 °F | 2.1 in. |
| March | 21.9 °F | 42.9 °F | 2.98 in. |
| April | 32.2 °F | 56.7 °F | 3.48 in. |
| May | 43.1 °F | 69.1 °F | 3.43 in. |
| June | 52.4 °F | 77.2 °F | 4.27 in. |
| July | 56.4 °F | 81.5 °F | 3.75 in. |
| August | 55.3 °F | 80.1 °F | 3.74 in. |
| September | 48.3 °F | 73.0 °F | 4.01 in. |
| October | 37.3 °F | 60.2 °F | 3.63 in. |
| November | 28.6 °F | 47.7 °F | 2.9 in. |
| December | 20.9 °F | 36.8 °F | 2.66 in. |
| Annual | 35.5 °F | 57.7 °F | 39.44 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 |