Lake Wisconsin, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.7 °F (low) to 57 °F (high). Annual precipitation averages 37.8 Inches. Lake Wisconsin 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 | 9.8 °F | 27.2 °F | 1.39 in. |
| February | 12.4 °F | 31.7 °F | 1.41 in. |
| March | 23.1 °F | 43.5 °F | 2.12 in. |
| April | 34.9 °F | 57.3 °F | 3.99 in. |
| May | 47.1 °F | 69.7 °F | 4.43 in. |
| June | 57.6 °F | 79.2 °F | 5.43 in. |
| July | 61.4 °F | 82.9 °F | 4.48 in. |
| August | 59.1 °F | 81.0 °F | 4.25 in. |
| September | 50.7 °F | 73.5 °F | 3.63 in. |
| October | 39.1 °F | 60.4 °F | 2.89 in. |
| November | 27.8 °F | 45.2 °F | 2.09 in. |
| December | 17.1 °F | 32.7 °F | 1.68 in. |
| Annual | 36.7 °F | 57 °F | 37.79 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 |