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.

Fog/Mist

34°F

1°C

Humidity 93%
Wind Speed Calm
Barometer 30.39 in
Dewpoint 32°F (0°C)
Visibility 5.00 mi
Last update 11 Apr 3:10 am CDT
Extended Forecast for

Rockton IL

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 35. Calm wind.

    Low: 35 °F

    Patchy Fog

  • Saturday

    Saturday: A 10 percent chance of showers after 5pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 57. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 57 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers, mainly after 7pm. Mostly cloudy, with a low around 49. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Chance
    Showers

  • Sunday

    Sunday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 10am. Mostly cloudy, with a high near 72. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 70%.

    High: 72 °F

    Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 60. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    Low: 60 °F

    Showers and
    Breezy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 76.

    High: 76 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny
    then Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Showers

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 35. Calm wind.
Saturday
A 10 percent chance of showers after 5pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 57. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 50 percent chance of showers, mainly after 7pm. Mostly cloudy, with a low around 49. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 10am. Mostly cloudy, with a high near 72. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 70%.
Sunday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 60. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 76.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Tuesday
Showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 81.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 61.
Wednesday
A chance of showers. Partly sunny, with a high near 76.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 57.
Thursday
A chance of showers. Mostly sunny, with a high near 77.
Thursday Night
A chance of showers. Partly cloudy, with a low around 57.
Friday
A chance of showers. Partly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rockton IL
 42.45°N 89.05°W
Last Update:
3:06 am CDT Apr 11, 2026
Forecast Valid:
3am CDT Apr 11, 2026-6pm CDT Apr 17, 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