Dalton, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.2 °F (low) to 59.8 °F (high). Annual precipitation averages 40.2 Inches. Dalton 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 | 19.4 °F | 34.1 °F | 2.82 in. |
| February | 20.5 °F | 37.0 °F | 2.13 in. |
| March | 28.5 °F | 46.7 °F | 3.04 in. |
| April | 39.2 °F | 60.2 °F | 3.71 in. |
| May | 49.7 °F | 70.5 °F | 4.06 in. |
| June | 58.9 °F | 79.1 °F | 4.45 in. |
| July | 62.5 °F | 82.4 °F | 3.89 in. |
| August | 60.7 °F | 81.1 °F | 3.77 in. |
| September | 53.7 °F | 75.0 °F | 3.44 in. |
| October | 42.7 °F | 62.7 °F | 3.25 in. |
| November | 33.1 °F | 50.1 °F | 2.86 in. |
| December | 25.2 °F | 38.9 °F | 2.79 in. |
| Annual | 41.2 °F | 59.8 °F | 40.21 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 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |