Appleton, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.4 °F (low) to 54.7 °F (high). Annual precipitation averages 33.1 Inches. Appleton 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 | 10.2 °F | 25.4 °F | 1.36 in. |
| February | 12.2 °F | 28.9 °F | 1.14 in. |
| March | 22.4 °F | 40.4 °F | 1.87 in. |
| April | 34.3 °F | 53.9 °F | 3.22 in. |
| May | 46.2 °F | 66.8 °F | 3.69 in. |
| June | 56.6 °F | 76.4 °F | 4.61 in. |
| July | 60.8 °F | 81.1 °F | 3.79 in. |
| August | 59.0 °F | 78.9 °F | 3.61 in. |
| September | 50.9 °F | 71.8 °F | 3.25 in. |
| October | 39.2 °F | 58.0 °F | 2.84 in. |
| November | 28.0 °F | 43.7 °F | 1.97 in. |
| December | 17.0 °F | 30.9 °F | 1.72 in. |
| Annual | 36.4 °F | 54.7 °F | 33.07 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 5b : -15°F to -10°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 |