Janesville, WI Weather Radar

About Janesville weather

Janesville is in Rock County, Wisconsin, United States at 42.68°, -89.02°. Right now it’s 48° and mostly cloudy; today’s high is 65° with a 41% chance of rain.

Wisconsin has a humid continental climate with cold, snowy winters and warm, humid summers. The state's weather is influenced by Lake Michigan to the east and Lake Superior to the north, which moderate coastal temperatures and generate lake-effect precipitation. Madison receives approximately 34 inches of rain and 51 inches of snow per year, with the heaviest snowfall occurring in the northern part of the state.