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

0°F

-18°C

Humidity 78%
Wind Speed W 8 mph
Barometer 30.19 in
Dewpoint -6°F (-21°C)
Visibility 10.00 mi
Wind Chill-14°F (-26°C)
Last update 28 Jan 7:45 am CST
Extended Forecast for

Beloit WI

  • Today

    Today: Sunny, with a high near 13. Wind chill values between -10 and zero. West wind 5 to 15 mph.

    High: 13 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around -5. Northwest wind around 5 mph.

    Low: -5 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 12. Wind chill values between -5 and -15. Northwest wind around 5 mph.

    High: 12 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -3. Wind chill values between -10 and -15. Calm wind becoming north around 5 mph after midnight.

    Low: -3 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 13. North wind 10 to 15 mph.

    High: 13 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 2. Northwest wind 5 to 10 mph.

    Low: 2 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 19. North wind 5 to 10 mph.

    High: 19 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 4. Northwest wind around 5 mph becoming calm.

    Low: 4 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of snow after noon. Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny
    then Chance
    Snow

Detailed Forecast

Today
Sunny, with a high near 13. Wind chill values between -10 and zero. West wind 5 to 15 mph.
Tonight
Mostly clear, with a low around -5. Northwest wind around 5 mph.
Thursday
Sunny, with a high near 12. Wind chill values between -5 and -15. Northwest wind around 5 mph.
Thursday Night
Partly cloudy, with a low around -3. Wind chill values between -10 and -15. Calm wind becoming north around 5 mph after midnight.
Friday
Mostly sunny, with a high near 13. North wind 10 to 15 mph.
Friday Night
Partly cloudy, with a low around 2. Northwest wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 19. North wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 4. Northwest wind around 5 mph becoming calm.
Sunday
A 30 percent chance of snow after noon. Mostly sunny, with a high near 25.
Sunday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 13.
Monday
Mostly cloudy, with a high near 26.
Monday Night
Mostly cloudy, with a low around 11.
Tuesday
A 20 percent chance of snow. Mostly cloudy, with a high near 27.
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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:
8:27 am CST Jan 28, 2026
Forecast Valid:
8am CST Jan 28, 2026-6pm CST Feb 3, 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