Stillwater, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.7 °F (low) to 59 °F (high). Annual precipitation averages 42.7 Inches. Stillwater 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 | 15.8 °F | 32.5 °F | 3.01 in. |
| February | 17.1 °F | 35.5 °F | 2.19 in. |
| March | 25.8 °F | 44.5 °F | 2.9 in. |
| April | 37.2 °F | 58.6 °F | 3.4 in. |
| May | 48.7 °F | 70.4 °F | 3.54 in. |
| June | 57.8 °F | 78.7 °F | 4.77 in. |
| July | 62.1 °F | 84.3 °F | 4.53 in. |
| August | 61.0 °F | 81.5 °F | 4.18 in. |
| September | 53.1 °F | 74.2 °F | 3.8 in. |
| October | 41.9 °F | 61.4 °F | 4.02 in. |
| November | 32.1 °F | 48.8 °F | 3.03 in. |
| December | 23.3 °F | 37.7 °F | 3.28 in. |
| Annual | 39.7 °F | 59 °F | 42.65 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 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |