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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Partly Cloudy

36°F

2°C

Humidity 75%
Wind Speed NE 17 mph
Barometer 30.21 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 1 Apr 5:45 am CDT
Extended Forecast for

Janesville WI

  • Today

    Today: Mostly cloudy, with a high near 45. East wind 10 to 15 mph.

    High: 45 °F

    Mostly Cloudy

  • Tonight

    Tonight: Showers, with thunderstorms also possible after 4am. Low around 37. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 37 °F

    Chance
    Showers then
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 67. Breezy, with an east wind 15 to 20 mph becoming south in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 67 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 10pm, then showers between 10pm and 1am. Low around 43. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Showers and
    Breezy

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 66. West wind 5 to 10 mph becoming southeast in the afternoon.

    High: 66 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 45. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 45 °F

    Showers

  • Saturday

    Saturday: A 50 percent chance of showers. Mostly cloudy, with a high near 58. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 58 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 31. West wind around 15 mph, with gusts as high as 25 mph.

    Low: 31 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 45. East wind 10 to 15 mph.
Tonight
Showers, with thunderstorms also possible after 4am. Low around 37. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and possibly a thunderstorm. High near 67. Breezy, with an east wind 15 to 20 mph becoming south in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Showers and possibly a thunderstorm before 10pm, then showers between 10pm and 1am. Low around 43. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 66. West wind 5 to 10 mph becoming southeast in the afternoon.
Friday Night
Showers and possibly a thunderstorm. Low around 45. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A 50 percent chance of showers. Mostly cloudy, with a high near 58. West wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 31. West wind around 15 mph, with gusts as high as 25 mph.
Sunday
Partly sunny, with a high near 49.
Sunday Night
Mostly clear, with a low around 29.
Monday
A chance of rain and snow showers. Partly sunny, with a high near 53. Chance of precipitation is 40%.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.67°N 89.04°W (Elev. 774 ft)
Last Update:
3:57 am CDT Apr 1, 2026
Forecast Valid:
6am CDT Apr 1, 2026-6pm CDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation