Stone Lake, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.9 °C (low) to 11.1 °C (high). Annual precipitation averages 912.9 Millimeters. Stone Lake is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -17 °C | -6.2 °C | 27.69 mm |
| February | -15.7 °C | -3.2 °C | 29.46 mm |
| March | -8.8 °C | 3.7 °C | 45.21 mm |
| April | -1.6 °C | 11.3 °C | 81.03 mm |
| May | 5.1 °C | 18.9 °C | 104.9 mm |
| June | 10.7 °C | 23.9 °C | 119.13 mm |
| July | 13.1 °C | 26.1 °C | 117.09 mm |
| August | 11.9 °C | 24.8 °C | 101.6 mm |
| September | 7.8 °C | 20.6 °C | 102.36 mm |
| October | 1.3 °C | 12.7 °C | 92.71 mm |
| November | -5.3 °C | 4.1 °C | 52.07 mm |
| December | -12.3 °C | -3.1 °C | 39.62 mm |
| Annual | -0.9 °C | 11.1 °C | 912.87 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |