Wisconsin : Climatic Facts

Wisconsin has a continental climate with warm summers and cold winters. Freeze free growing season lasts for 80 days. The average annual temperature ranges from 39°F (4°C) in the north to about 50°F (10°C) in the south. Annual precipitation in the state ranges from about 34 inches (86 cm) in the northwest to about 28 inches (71 cm) in the south-central region and the areas bordering Lake Superior and Lake Michigan. In Milwaukee average annual precipitation (1971–2000) was is 34.8 in (88.4 cm). April, June, and July are the rainiest months in Milwaukee.