Milton, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.9 °F (low) to 57.9 °F (high). Annual precipitation averages 46.2 Inches. Milton is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.9 °F | 31.0 °F | 3.38 in. |
| February | 15.3 °F | 34.0 °F | 2.64 in. |
| March | 23.9 °F | 43.0 °F | 3.52 in. |
| April | 35.4 °F | 57.8 °F | 3.73 in. |
| May | 47.0 °F | 70.0 °F | 3.78 in. |
| June | 56.1 °F | 77.9 °F | 4.68 in. |
| July | 60.8 °F | 82.4 °F | 4.88 in. |
| August | 59.3 °F | 80.5 °F | 4.05 in. |
| September | 51.6 °F | 73.5 °F | 3.93 in. |
| October | 40.4 °F | 60.7 °F | 4.31 in. |
| November | 30.3 °F | 47.6 °F | 3.49 in. |
| December | 21.3 °F | 36.2 °F | 3.84 in. |
| Annual | 37.9 °F | 57.9 °F | 46.23 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |