Sextonville, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.8 °C (low) to 13.8 °C (high). Annual precipitation averages 953.5 Millimeters. Sextonville 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 | -13.3 °C | -2.7 °C | 31.75 mm |
| February | -11.7 °C | -0.3 °C | 30.99 mm |
| March | -5.3 °C | 6.6 °C | 51.82 mm |
| April | 1.3 °C | 14 °C | 104.39 mm |
| May | 7.7 °C | 20.7 °C | 114.81 mm |
| June | 13.6 °C | 25.9 °C | 143.51 mm |
| July | 15.6 °C | 27.9 °C | 122.43 mm |
| August | 14.5 °C | 27.1 °C | 106.43 mm |
| September | 9.5 °C | 22.9 °C | 91.69 mm |
| October | 2.8 °C | 15.9 °C | 65.02 mm |
| November | -3.4 °C | 7.4 °C | 50.55 mm |
| December | -9.5 °C | 0.3 °C | 40.13 mm |
| Annual | 1.8 °C | 13.8 °C | 953.52 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |