Millerton, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37 °F (low) to 59.2 °F (high). Annual precipitation averages 46.1 Inches. Millerton is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 14.3 °F | 34.0 °F | 3.15 in. |
| February | 16.0 °F | 37.3 °F | 2.56 in. |
| March | 24.2 °F | 45.1 °F | 3.39 in. |
| April | 34.5 °F | 58.8 °F | 3.49 in. |
| May | 44.9 °F | 70.2 °F | 3.79 in. |
| June | 54.1 °F | 77.8 °F | 4.57 in. |
| July | 59.1 °F | 83.1 °F | 4.73 in. |
| August | 57.6 °F | 81.1 °F | 4.21 in. |
| September | 50.0 °F | 73.4 °F | 4.5 in. |
| October | 38.6 °F | 61.6 °F | 4.69 in. |
| November | 29.3 °F | 49.8 °F | 3.28 in. |
| December | 21.1 °F | 38.7 °F | 3.69 in. |
| Annual | 37 °F | 59.2 °F | 46.05 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |