Dalton, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.8 °F (low) to 56.4 °F (high). Annual precipitation averages 35.4 Inches. Dalton is located in USDA Plant Hardiness Zone 5a. 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 | 9.2 °F | 26.5 °F | 1.42 in. |
| February | 11.9 °F | 30.8 °F | 1.3 in. |
| March | 22.3 °F | 42.7 °F | 1.87 in. |
| April | 34.0 °F | 56.6 °F | 3.59 in. |
| May | 46.2 °F | 69.1 °F | 4.16 in. |
| June | 56.3 °F | 78.6 °F | 5.21 in. |
| July | 60.2 °F | 82.3 °F | 4.12 in. |
| August | 58.1 °F | 80.5 °F | 3.54 in. |
| September | 50.0 °F | 73.2 °F | 3.36 in. |
| October | 38.5 °F | 60.0 °F | 2.95 in. |
| November | 26.9 °F | 44.5 °F | 2.1 in. |
| December | 16.2 °F | 31.8 °F | 1.75 in. |
| Annual | 35.8 °F | 56.4 °F | 35.37 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |