Dalton, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.9 °C (low) to 13.3 °C (high). Annual precipitation averages 966.7 Millimeters. Dalton is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.1 °C | -0.7 °C | 59.44 mm |
| February | -9.7 °C | 0.5 °C | 47.24 mm |
| March | -6.1 °C | 4.9 °C | 64.77 mm |
| April | -0.1 °C | 12.6 °C | 79.76 mm |
| May | 6.2 °C | 19.6 °C | 84.84 mm |
| June | 11.3 °C | 24.1 °C | 98.55 mm |
| July | 13.7 °C | 26.3 °C | 100.08 mm |
| August | 12.6 °C | 25.7 °C | 93.98 mm |
| September | 8.9 °C | 22.1 °C | 96.27 mm |
| October | 3.6 °C | 15.1 °C | 94.74 mm |
| November | -1.6 °C | 7.8 °C | 73.66 mm |
| December | -6.3 °C | 2.1 °C | 73.41 mm |
| Annual | 1.9 °C | 13.3 °C | 966.74 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |