Monthly Temperature Averages and Climate for Janesville, WI

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Janesville, WI has a longitude of -89.0 degrees and a latitude of 42.6 degrees.

Janesville, WI has temperatures that can go as high as 80.5 °F in June, 84.1 °F in July, and 82.2 °F in August. The hottest month is typically July.

Janesville, WI also has temperatures that can go as low as 17.7 °F in December, 13.8 °F in January, and 17.5 °F in February. The coldest month is typically January.

The wettest month for Janesville, WI is June with 13.0 inches of rain.

The annual weather and monthly temperature averages for highs and lows are presented in the table below. The weather values used to interpolate these values are provided by the US NAOO weather station values from the last 10 years.

JanFebMarAprMayJunJulAugSepOctNovDec
Average High (°F)28.433.744.658.869.880.584.182.275.060.846.232.0
Average Low (°F)13.817.526.737.648.257.260.959.150.239.230.317.7
Average Precipitation (in)4.04.16.08.910.013.010.913.08.17.95.06.0
Tree Graphic for climate page specific to city and state for annual weather site

Most of Wisconsin is classified as warm-summer humid continental climate, while southern and southwestern portions are classified as hot-summer humid continental climate. Wisconsin also receives a large amount of regular snowfall averaging around 40 inches (100 cm) in the southern portions with up to 160 inches (410 cm) annually in the Lake Superior snowbelt each year.

In reality, each climate is unique and finding one that is suitable can be a real challenge! We hope that the information here can be the starting point of your weather and climate research for your next vacation or potentially next home.

We hope you use this information to make your travel plans to Janesville, WI or decide if living in the Janesville climate is the right choice for you!

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