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.

Rain

50°F

10°C

Humidity 82%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 45°F (7°C)
Visibility 5.00 mi
Last update 9 Apr 9:50 pm CDT
Extended Forecast for

Rockton IL

  • Tonight

    Tonight: Rain and possibly a thunderstorm. Low around 43. Northeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 43 °F

    Rain

  • Friday

    Friday: A chance of rain before 7am, then a chance of showers between 7am and 9am. Cloudy, then gradually becoming mostly sunny, with a high near 54. North northwest wind around 10 mph. Chance of precipitation is 40%.

    High: 54 °F

    Chance Rain
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 33. North wind around 5 mph becoming calm in the evening.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 58. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 58 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    Low: 50 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 72. Breezy. Chance of precipitation is 50%.

    High: 72 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Breezy.

    Low: 61 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: A chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77.

    High: 77 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Showers
    Likely

Detailed Forecast

Tonight
Rain and possibly a thunderstorm. Low around 43. Northeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
A chance of rain before 7am, then a chance of showers between 7am and 9am. Cloudy, then gradually becoming mostly sunny, with a high near 54. North northwest wind around 10 mph. Chance of precipitation is 40%.
Friday Night
Mostly clear, with a low around 33. North wind around 5 mph becoming calm in the evening.
Saturday
A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 58. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Sunday
A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 72. Breezy. Chance of precipitation is 50%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Breezy.
Monday
A chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79.
Tuesday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 56.
Wednesday
A chance of showers. Partly sunny, with a high near 68.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 72.
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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:
8:46 pm CDT Apr 9, 2026
Forecast Valid:
10pm CDT Apr 9, 2026-6pm CDT Apr 16, 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