Brewster Hill, New York has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.5 °F (low) to 60.1 °F (high). Annual precipitation averages 49.4 Inches. Brewster Hill is located in USDA Plant Hardiness Zone 6b. 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 | 18.2 °F | 35.7 °F | 3.8 in. |
| February | 20.2 °F | 38.9 °F | 2.66 in. |
| March | 27.3 °F | 46.7 °F | 3.88 in. |
| April | 38.1 °F | 59.5 °F | 3.83 in. |
| May | 47.9 °F | 69.8 °F | 3.41 in. |
| June | 57.1 °F | 77.9 °F | 3.97 in. |
| July | 62.4 °F | 83.0 °F | 4.6 in. |
| August | 61.1 °F | 81.2 °F | 5.45 in. |
| September | 53.6 °F | 74.3 °F | 4.55 in. |
| October | 42.2 °F | 62.5 °F | 4.83 in. |
| November | 32.7 °F | 51.4 °F | 4.2 in. |
| December | 24.6 °F | 40.6 °F | 4.17 in. |
| Annual | 40.5 °F | 60.1 °F | 49.35 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |