Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

84°F

29°C

Humidity 70%
Wind Speed W 8 mph
Barometer 29.95 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 2 Sep 11:45 am CDT
Extended Forecast for

Rockton IL

Heat Advisory until September 2, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until September 2, 09:00pm

    NOW until 9:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 92 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 72. South wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 72 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 87. Heat index values as high as 95. South southwest wind 5 to 10 mph becoming west in the afternoon.

    High: 87 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 71. South southeast wind around 5 mph becoming northeast after midnight. Winds could gust as high as 10 mph.

    Low: 71 °F

    Partly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 86. East southeast wind around 5 mph becoming south southwest in the afternoon.

    High: 86 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 69.

    Low: 69 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly before 1pm.  Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 92. Heat index values as high as 100. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. South wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. Heat index values as high as 95. South southwest wind 5 to 10 mph becoming west in the afternoon.
Thursday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. South southeast wind around 5 mph becoming northeast after midnight. Winds could gust as high as 10 mph.
Friday
A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. East southeast wind around 5 mph becoming south southwest in the afternoon.
Friday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 69.
Saturday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Partly sunny, with a high near 83.
Sunday Night
A chance of showers after 1am. Partly cloudy, with a low around 63.
Labor Day
A chance of showers. Partly sunny, with a high near 80.
Monday Night
Mostly cloudy, with a low around 61.
Tuesday
Partly sunny, with a high near 80.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Rockton IL
 42.45°N 89.08°W
12:21 pm CDT Sep 2, 2026
12pm CDT Sep 2, 2026-6pm CDT Sep 8, 2026
 
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Additional Resources

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Hourly Weather Forecast

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