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

32°F

0°C

Humidity 64%
Wind Speed SE 8 mph
Barometer 30.41 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 24 Mar 12:55 am CDT
Extended Forecast for

Beloit WI

  • Overnight

    Overnight: A chance of flurries after 2am. Mostly cloudy, with a low around 30. South wind 5 to 10 mph.

    Low: 30 °F

    Chance
    Flurries

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 52. South wind 5 to 10 mph.

    High: 52 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35. Southeast wind around 5 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 65. South wind 5 to 10 mph.

    High: 65 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49. South wind around 5 mph.

    Low: 49 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain after 1pm. Partly sunny, with a high near 69. Southwest 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 28. North wind around 15 mph. Chance of precipitation is 20%.

    Low: 28 °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.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of flurries after 2am. Mostly cloudy, with a low around 30. South wind 5 to 10 mph.
Tuesday
Mostly cloudy, with a high near 52. South wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 35. Southeast wind around 5 mph.
Wednesday
Partly sunny, with a high near 65. South wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 49. South wind around 5 mph.
Thursday
A 30 percent chance of rain after 1pm. Partly sunny, with a high near 69. Southwest 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 28. North wind around 15 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.
Saturday
Sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Partly sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Mostly sunny, with a high near 66.
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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:
12:31 am CDT Mar 24, 2026
Forecast Valid:
1am CDT Mar 24, 2026-6pm CDT Mar 30, 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