National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Light Snow

21°F

-6°C

Humidity 93%
Wind Speed SW 6 mph
Barometer 30.00 in
Dewpoint 19°F (-7°C)
Visibility 4.00 mi
Wind Chill13°F (-11°C)
Last update 30 Dec 6:45 pm CST
Extended Forecast for

4 Miles WNW Beloit WI

Winter Weather Advisory until December 30, 10:00pm
Click here for hazard details and duration
...
  •  
    Winter Weather Advisory until December 30, 10:00pm

    NOW until 10:00pm Tue

    Winter Weather Advisory

  • Tonight

    Low: 22 °F

    Wintry Mix
    then Cloudy

  • Wednesday

    Wednesday: Snow likely, mainly between 10am and 5pm. Cloudy, with a high near 29. Northwest wind 10 to 15 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 29 °F

    Snow Likely

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 6. Wind chill values between -5 and zero. Northwest wind 5 to 15 mph.

    Low: 6 °F

    Decreasing
    Clouds

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 19. Wind chill values between -5 and 5. Northwest wind around 5 mph becoming southwest in the afternoon.

    High: 19 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 10. Southwest wind around 5 mph.

    Low: 10 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 23. Northwest wind around 5 mph.

    High: 23 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 9. Northwest wind around 5 mph becoming calm in the evening.

    Low: 9 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 24. Calm wind becoming northwest around 5 mph.

    High: 24 °F

    Partly Sunny

Detailed Forecast

Tonight
Snow, possibly mixed with freezing rain, mainly before 9pm. Low around 22. Northwest wind around 10 mph. Chance of precipitation is 80%. Little or no ice accumulation expected. Total nighttime snow accumulation of less than a half inch possible.
Wednesday
Snow likely, mainly between 10am and 5pm. Cloudy, with a high near 29. Northwest wind 10 to 15 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 6. Wind chill values between -5 and zero. Northwest wind 5 to 15 mph.
New Year's Day
Partly sunny, with a high near 19. Wind chill values between -5 and 5. Northwest wind around 5 mph becoming southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 10. Southwest wind around 5 mph.
Friday
Mostly sunny, with a high near 23. Northwest wind around 5 mph.
Friday Night
Partly cloudy, with a low around 9. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 24. Calm wind becoming northwest around 5 mph.
Saturday Night
Mostly cloudy, with a low around 13.
Sunday
Mostly cloudy, with a high near 30.
Sunday Night
Mostly cloudy, with a low around 21.
Monday
Mostly sunny, with a high near 32.
Monday Night
Mostly cloudy, with a low around 18.
Tuesday
Partly sunny, with a high near 29.
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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:
6:08 pm CST Dec 30, 2025
Forecast Valid:
7pm CST Dec 30, 2025-6pm CST Jan 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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