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.

Overcast

43°F

6°C

Humidity 100%
Wind Speed SE 9 mph
Barometer 29.96 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 30 Apr 8:45 pm CDT
Extended Forecast for

Rockton IL

  • Tonight

    Tonight: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 37. East wind around 5 mph becoming north northwest after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Showers
    Likely then
    Isolated
    Showers

  • Friday

    Friday: Isolated showers after 1pm. Partly sunny, with a high near 51. North northwest wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 51 °F

    Mostly Sunny
    then Isolated
    Showers

  • Friday Night

    Friday Night: Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 34. North wind around 5 mph becoming calm in the evening.

    Low: 34 °F

    Partly Cloudy
    then Frost

  • Saturday

    Saturday: Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 56. North wind 5 to 10 mph.

    High: 56 °F

    Frost then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. South southwest wind 5 to 10 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 45. Chance of precipitation is 30%.

    Low: 45 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 72. Breezy.

    High: 72 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: A chance of showers before 1am. Partly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

Detailed Forecast

Tonight
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 37. East wind around 5 mph becoming north northwest after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Isolated showers after 1pm. Partly sunny, with a high near 51. North northwest wind 5 to 10 mph. Chance of precipitation is 20%.
Friday Night
Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 34. North wind around 5 mph becoming calm in the evening.
Saturday
Widespread frost, mainly before 7am. Otherwise, mostly sunny, with a high near 56. North wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 39. South southwest wind 5 to 10 mph.
Sunday
Partly sunny, with a high near 65.
Sunday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 45. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 72. Breezy.
Monday Night
A chance of showers before 1am. Partly cloudy, with a low around 46.
Tuesday
A chance of showers after 1pm. Partly sunny, with a high near 62.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 41.
Wednesday
Partly sunny, with a high near 57.
Wednesday Night
Mostly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 58.
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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:
8:56 pm CDT Apr 30, 2026
Forecast Valid:
9pm CDT Apr 30, 2026-6pm CDT May 7, 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