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

32°F

0°C

Humidity 51%
Wind Speed E 7 mph
Barometer 30.43 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 1 Mar 5:45 pm CST
Extended Forecast for

4 Miles WNW Beloit WI

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 20. East wind around 5 mph.

    Low: 20 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 44. South wind 5 to 10 mph.

    High: 44 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 30. Southeast wind around 5 mph.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: Rain likely, mainly before noon. Mostly cloudy, with a high near 44. Southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 44 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 34. East wind around 5 mph.

    Low: 34 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, with thunderstorms also possible after noon. Partly sunny, with a high near 48. East wind 5 to 10 mph. Chance of precipitation is 50%.

    High: 48 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain and thunderstorms. Mostly cloudy, with a low around 38. Northeast wind 5 to 10 mph. Chance of precipitation is 50%.

    Low: 38 °F

    Chance Rain

  • Thursday

    Thursday: A 50 percent chance of rain. Mostly cloudy, with a high near 54. East wind 5 to 10 mph becoming south in the afternoon.

    High: 54 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A slight chance of rain, then a chance of rain and thunderstorms after midnight. Mostly cloudy, with a low around 40. Chance of precipitation is 40%.

    Low: 40 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 20. East wind around 5 mph.
Monday
Sunny, with a high near 44. South wind 5 to 10 mph.
Monday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 30. Southeast wind around 5 mph.
Tuesday
Rain likely, mainly before noon. Mostly cloudy, with a high near 44. Southeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 34. East wind around 5 mph.
Wednesday
A chance of rain, with thunderstorms also possible after noon. Partly sunny, with a high near 48. East wind 5 to 10 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 38. Northeast wind 5 to 10 mph. Chance of precipitation is 50%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 54. East wind 5 to 10 mph becoming south in the afternoon.
Thursday Night
A slight chance of rain, then a chance of rain and thunderstorms after midnight. Mostly cloudy, with a low around 40. Chance of precipitation is 40%.
Friday
Rain. High near 65. Chance of precipitation is 80%.
Friday Night
Rain likely. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.
Saturday
A 20 percent chance of rain. Partly sunny, with a high near 55.
Saturday Night
Mostly clear, with a low around 34.
Sunday
A 20 percent chance of rain. Sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Beloit WI
 42.54°N 89.1°W (Elev. 889 ft)
Last Update:
4:17 pm CST Mar 1, 2026
Forecast Valid:
5pm CST Mar 1, 2026-6pm CDT Mar 8, 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