Plattekill, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.3 °F (low) to 60 °F (high). Annual precipitation averages 48.7 Inches. Plattekill 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 | 17.5 °F | 34.6 °F | 3.45 in. |
| February | 19.2 °F | 38.0 °F | 2.79 in. |
| March | 26.7 °F | 46.3 °F | 3.85 in. |
| April | 37.9 °F | 59.8 °F | 3.77 in. |
| May | 48.6 °F | 70.3 °F | 3.74 in. |
| June | 57.5 °F | 78.5 °F | 4.7 in. |
| July | 62.7 °F | 83.5 °F | 4.54 in. |
| August | 61.0 °F | 81.9 °F | 4.56 in. |
| September | 53.9 °F | 74.6 °F | 4.74 in. |
| October | 42.5 °F | 62.4 °F | 4.7 in. |
| November | 32.7 °F | 50.4 °F | 3.64 in. |
| December | 23.8 °F | 39.3 °F | 4.18 in. |
| Annual | 40.3 °F | 60 °F | 48.66 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |