7-Day Forecast 42.67°N 89.04°W (Text-Only)
NWS Forecast for: Janesville WI
Issued by: National Weather Service Milwaukee, WI
Last Update: 8:55 am CDT Jun 16, 2025




Today: Partly sunny, with a high near 85. South wind 5 to 10 mph.

Tonight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 67. South wind around 5 mph.

Tuesday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 85. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday Night: Showers likely and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 66. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Wednesday: Showers and possibly a thunderstorm. High near 81. South wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

Wednesday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 60. West wind 5 to 10 mph.

Juneteenth: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 82. West wind 5 to 10 mph.

Thursday Night: Partly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening.

Friday: Mostly sunny, with a high near 83.

Friday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.

Saturday: Mostly sunny and hot, with a high near 90.

Saturday Night: Mostly clear, with a low around 72.

Sunday: Sunny and hot, with a high near 91.



Janesville WI
 42.67°N 89.04°W (Elev. 774 ft)

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