Harris Hill, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.5 °F (low) to 56.9 °F (high). Annual precipitation averages 40.6 Inches. Harris 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.9 °F | 32.3 °F | 3.15 in. |
| February | 18.0 °F | 33.5 °F | 2.4 in. |
| March | 24.8 °F | 41.8 °F | 2.94 in. |
| April | 35.5 °F | 54.8 °F | 3.33 in. |
| May | 46.8 °F | 67.3 °F | 3.33 in. |
| June | 56.7 °F | 75.9 °F | 3.77 in. |
| July | 61.5 °F | 80.1 °F | 3.37 in. |
| August | 60.2 °F | 79.3 °F | 3.25 in. |
| September | 53.2 °F | 72.7 °F | 4.21 in. |
| October | 42.5 °F | 60.0 °F | 3.91 in. |
| November | 32.8 °F | 47.8 °F | 3.5 in. |
| December | 24.4 °F | 37.5 °F | 3.42 in. |
| Annual | 39.5 °F | 56.9 °F | 40.58 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |