Appleton, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.8 °C (low) to 12.5 °C (high). Annual precipitation averages 676.9 Millimeters. Appleton is located in USDA Plant Hardiness Zone 4b. 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 | -16.1 °C | -5.7 °C | 17.53 mm |
| February | -14.2 °C | -3.2 °C | 18.54 mm |
| March | -6.9 °C | 3.7 °C | 33.27 mm |
| April | 0.4 °C | 13 °C | 61.47 mm |
| May | 7.8 °C | 20.6 °C | 78.49 mm |
| June | 13.9 °C | 25.9 °C | 102.11 mm |
| July | 15.9 °C | 28.1 °C | 102.62 mm |
| August | 14.2 °C | 26.9 °C | 88.65 mm |
| September | 9.4 °C | 23.3 °C | 66.55 mm |
| October | 2.1 °C | 14.9 °C | 60.45 mm |
| November | -5.2 °C | 5.5 °C | 28.19 mm |
| December | -12.2 °C | -2.6 °C | 19.05 mm |
| Annual | 0.8 °C | 12.5 °C | 676.92 mm |
| 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |