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

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

70°F

21°C

Humidity 83%
Wind Speed Calm
Barometer 30.20 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 7 Sep 8:45 am CDT
Extended Forecast for

Rockton IL

  • Labor Day

    Labor Day: Sunny, with a high near 80. Southeast wind 5 to 10 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. East southeast wind around 5 mph.

    Low: 58 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 84 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 69. South southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 90%.

    Low: 69 °F

    Slight Chance
    T-storms then
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Mostly cloudy, with a high near 82. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Labor Day
Sunny, with a high near 80. Southeast wind 5 to 10 mph.
Tonight
Mostly cloudy, with a low around 58. East southeast wind around 5 mph.
Tuesday
Partly sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 69. South southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 90%.
Wednesday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Mostly cloudy, with a high near 82. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 53.
Friday
Mostly sunny, with a high near 81.
Friday Night
A chance of showers after 1am. Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
A chance of showers. Partly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rockton IL
 42.45°N 89.08°W
Last Update:
8:41 am CDT Sep 7, 2026
Forecast Valid:
8am CDT Sep 7, 2026-6pm CDT Sep 13, 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