Janesville, WI (53548) has a humid continental climate with cold winters and warm summers. The average high temperature in January is around 29°F (-1.7°C), while the average low temperature reaches around 15°F (-9.4°C). July is the warmest month of the year when temperatures reach an average high of 81°F (27.2°C) and an average low of 61°F (16.1°C). Precipitation is evenly distributed throughout the year with a yearly total averaging around 33 inches (83 cm). Snowfall averages around 38 inches (96 cm) per year.
Janesville (zip 53548), Wisconsin gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Janesville (zip 53548) averages 34 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 188 sunny days per year in Janesville (zip 53548). The US average is 205 sunny days.
Janesville (zip 53548) gets some kind of precipitation, on average, 116 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 83 degrees
Winter Low: the January low is 11
Rain: averages 36 inches of rain a year
Snow: averages 34 inches of snow a year