National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

73°F

23°C

Humidity 100%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 2 Sep 11:35 pm CDT
Extended Forecast for

4 Miles NNE Edgerton WI

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly before noon. Partly sunny, with a high near 87. South wind 5 to 10 mph becoming west in the afternoon.

    High: 87 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 69. Southeast wind around 5 mph becoming east after midnight. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Chance
    T-storms then
    Showers

  • Friday

    Friday: Showers and thunderstorms likely before 10am, then a slight chance of showers between 10am and noon. Partly sunny, with a high near 87. Heat index values as high as 95. South wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Showers
    Likely then
    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 68. East wind around 5 mph becoming calm. Chance of precipitation is 50%.

    Low: 68 °F

    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 85. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. East wind around 5 mph becoming calm after midnight.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 83. Calm wind becoming southeast around 5 mph in the morning.

    High: 83 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. Calm wind.
Thursday
A 30 percent chance of showers and thunderstorms, mainly before noon. Partly sunny, with a high near 87. South wind 5 to 10 mph becoming west in the afternoon.
Thursday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Low around 69. Southeast wind around 5 mph becoming east after midnight. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers and thunderstorms likely before 10am, then a slight chance of showers between 10am and noon. Partly sunny, with a high near 87. Heat index values as high as 95. South wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. East wind around 5 mph becoming calm. Chance of precipitation is 50%.
Saturday
A slight chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 85. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 20%.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. East wind around 5 mph becoming calm after midnight.
Sunday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 83. Calm wind becoming southeast around 5 mph in the morning.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64.
Labor Day
Partly sunny, with a high near 82.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 63.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 81.
Tuesday Night
A 40 percent chance of showers. Partly cloudy, with a low around 66.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Edgerton WI
 42.89°N 89.05°W (Elev. 906 ft)
Last Update:
11:31 pm CDT Sep 2, 2026
Forecast Valid:
11pm CDT Sep 2, 2026-6pm CDT Sep 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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