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

48°F

9°C

Humidity 58%
Wind Speed SW 14 G 22 mph
Barometer 29.68 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 9 Mar 8:45 am CDT
Extended Forecast for

Beloit WI

  • Today

    Today: Sunny, with a high near 69. Southwest wind 10 to 15 mph.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. Southeast wind around 5 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Patchy fog between 8am and 9am. Otherwise, partly sunny, with a high near 59. East wind 5 to 10 mph. Chance of precipitation is 40%.

    High: 59 °F

    Patchy Fog
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Patchy fog before 1am. Low around 35. Northeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Rain likely, possibly mixed with snow showers before 4pm, then a chance of snow showers. Cloudy, with a high near 42. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 42 °F

    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 25. Northwest wind 5 to 15 mph.

    Low: 25 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Increasing clouds, with a high near 46. West wind 5 to 10 mph becoming south 10 to 15 mph in the afternoon.

    High: 46 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Rain likely before 1am, then rain and snow. Low around 35. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Breezy. Rain
    Likely then
    Rain/Snow

  • Friday

    Friday: A slight chance of rain and snow before 1pm. Mostly sunny, with a high near 45. Breezy. Chance of precipitation is 20%.

    High: 45 °F

    Slight Chance
    Rain/Snow and
    Breezy

Detailed Forecast

Today
Sunny, with a high near 69. Southwest wind 10 to 15 mph.
Tonight
Mostly clear, with a low around 45. Southeast wind around 5 mph.
Tuesday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Patchy fog between 8am and 9am. Otherwise, partly sunny, with a high near 59. East wind 5 to 10 mph. Chance of precipitation is 40%.
Tuesday Night
Showers and possibly a thunderstorm. Patchy fog before 1am. Low around 35. Northeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Rain likely, possibly mixed with snow showers before 4pm, then a chance of snow showers. Cloudy, with a high near 42. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 25. Northwest wind 5 to 15 mph.
Thursday
Increasing clouds, with a high near 46. West wind 5 to 10 mph becoming south 10 to 15 mph in the afternoon.
Thursday Night
Rain likely before 1am, then rain and snow. Low around 35. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A slight chance of rain and snow before 1pm. Mostly sunny, with a high near 45. Breezy. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 28.
Saturday
A chance of rain and snow. Cloudy, with a high near 44. Chance of precipitation is 40%.
Saturday Night
A chance of rain and snow. Cloudy, with a low around 32. Chance of precipitation is 50%.
Sunday
Rain and snow likely. Cloudy, with a high near 44. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Beloit WI
 42.52°N 89.02°W (Elev. 745 ft)
Last Update:
8:38 am CDT Mar 9, 2026
Forecast Valid:
9am CDT Mar 9, 2026-6pm CDT Mar 15, 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