Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Light Rain Thunderstorm in Vicinity

70°F

21°C

Humidity 94%
Wind Speed NE 13 mph
Barometer 29.94 in
Dewpoint 68°F (20°C)
Visibility 4.00 mi
Last update 11 Aug 10:45 am CDT
Extended Forecast for

2 Miles SW Harvard IL

Severe T-storm Watch until August 11, 02:00pm
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until August 11, 02:00pm

    NOW until 2:00pm Tue

    Severe T-storm Watch

  • Today

    High: 81 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly between 1am and 5am.  Mostly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly between 1pm and 4pm.  Partly sunny, with a high near 82. Calm wind becoming southwest around 5 mph.

    High: 82 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 10pm, then a chance of showers after midnight.  Increasing clouds, with a low around 65. Calm wind.  Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 1pm.  Mostly cloudy, with a high near 78. Calm wind becoming east around 5 mph in the afternoon.  Chance of precipitation is 70%.

    High: 78 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 40 percent chance of showers, mainly after 1am.  Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy
    then Showers
    Likely

Detailed Forecast

Today
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Some of the storms could be severe. High near 81. South wind around 5 mph becoming east southeast in the afternoon. Winds could gust as high as 10 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 40 percent chance of showers and thunderstorms, mainly between 1am and 5am. Mostly cloudy, with a low around 66. Calm wind.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Partly sunny, with a high near 82. Calm wind becoming southwest around 5 mph.
Wednesday Night
A chance of showers before 10pm, then a chance of showers after midnight. Increasing clouds, with a low around 65. Calm wind. Chance of precipitation is 40%.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%.
Thursday Night
A 40 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 62.
Friday
Partly sunny, with a high near 76.
Friday Night
Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66.
Sunday
A chance of showers. Mostly cloudy, with a high near 79.
Sunday Night
Mostly cloudy, with a low around 62.
Monday
Partly sunny, with a high near 77.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Harvard IL
 42.39°N 88.64°W
10:08 am CDT Aug 11, 2026
11am CDT Aug 11, 2026-6pm CDT Aug 17, 2026
 
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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