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

46°F

8°C

Humidity 50%
Wind Speed S 12 G 17 mph
Barometer 30.00 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 25 Mar 8:45 am CDT
Extended Forecast for

Beloit WI

  • Today

    Today: Mostly sunny, with a high near 70. South wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 70 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 51. South wind 5 to 10 mph.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of rain after 1pm. Increasing clouds, with a high near 69. South wind 5 to 15 mph becoming north in the afternoon.

    High: 69 °F

    Mostly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A slight chance of rain, mixing with snow after 10pm, then gradually ending. Mostly cloudy, with a low around 27. Northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Rain/Snow

  • Friday

    Friday: Mostly sunny, with a high near 44. North wind around 10 mph.

    High: 44 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24. Northwest wind 5 to 10 mph.

    Low: 24 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 51. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.

    High: 51 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 35. South wind 5 to 10 mph.

    Low: 35 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 70. South wind 10 to 15 mph, with gusts as high as 30 mph.
Tonight
Partly cloudy, with a low around 51. South wind 5 to 10 mph.
Thursday
A 50 percent chance of rain after 1pm. Increasing clouds, with a high near 69. South wind 5 to 15 mph becoming north in the afternoon.
Thursday Night
A slight chance of rain, mixing with snow after 10pm, then gradually ending. Mostly cloudy, with a low around 27. Northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 44. North wind around 10 mph.
Friday Night
Mostly clear, with a low around 24. Northwest wind 5 to 10 mph.
Saturday
Increasing clouds, with a high near 51. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 35. South wind 5 to 10 mph.
Sunday
Partly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 45.
Monday
A 20 percent chance of rain. Mostly sunny, with a high near 71.
Monday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 49.
Tuesday
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Beloit WI
 42.52°N 89.02°W (Elev. 745 ft)
Last Update:
8:32 am CDT Mar 25, 2026
Forecast Valid:
9am CDT Mar 25, 2026-6pm CDT Mar 31, 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