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.

Partly Cloudy

79°F

26°C

Humidity 58%
Wind Speed SW 5 mph
Barometer 30.01 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 30 Jul 7:45 pm CDT
Extended Forecast for

Rockton IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. South wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, mainly after 3pm. Mostly cloudy, with a high near 78. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 78 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely, then showers and possibly a thunderstorm after 10pm. Low around 63. East wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Low: 63 °F

    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 1pm, then a chance of showers. High near 74. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 74 °F

    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 60. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 60 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 62. South wind around 5 mph becoming calm in the evening.
Friday
Showers likely, mainly after 3pm. Mostly cloudy, with a high near 78. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Showers likely, then showers and possibly a thunderstorm after 10pm. Low around 63. East wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Saturday
Showers and possibly a thunderstorm before 1pm, then a chance of showers. High near 74. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Saturday Night
Mostly cloudy, with a low around 60. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 54.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
A chance of showers. Mostly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rockton IL
 42.45°N 89.08°W
Last Update:
2:46 pm CDT Jul 30, 2026
Forecast Valid:
7pm CDT Jul 30, 2026-6pm CDT Aug 6, 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