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Tracking Winter Weather and Frigid Temperatures Through This Weekend

A clipper storm will move across the Great Lakes through this weekend with periods of light snow, gusty winds, and lake effect snow bands which could make for hazardous travel at times. A frigid airmass will spread eastward behind this storm into the Midwest and Eastern U.S. through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Light Snow

16°F

-9°C

Humidity 73%
Wind Speed W 15 G 20 mph
Barometer 29.96 in
Dewpoint 9°F (-13°C)
Visibility 5.00 mi
Wind Chill1°F (-17°C)
Last update 17 Jan 2:45 pm CST
Extended Forecast for

Beloit WI

Winter Weather Advisory January 17, 02:58pm until January 17, 09:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 17, 02:58pm until January 17, 09:00pm

    NOW until 9:00pm Sat

    Winter Weather Advisory

  • This Afternoon

    High: 19 °F

    Snow

  • Tonight

    Tonight: Snow likely, mainly before 9pm. Mostly cloudy, with a low around 7. Wind chill values between -5 and 5. West wind around 10 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 7 °F

    Snow Likely
    then Mostly
    Cloudy

  • Sunday

    Sunday: Snow, mainly after noon. High near 19. Wind chill values between -10 and zero. Southwest wind 10 to 15 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 19 °F

    Mostly Cloudy
    then Snow

  • Sunday Night

    Sunday Night: Snow, mainly before midnight. Low around -1. Wind chill values between -10 and -20. Blustery, with a southwest wind 10 to 15 mph becoming northwest 15 to 20 mph in the evening. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: -1 °F

    Snow then
    Mostly Cloudy
    and Blustery

  • M.L.King Day

    M.L.King Day: Mostly sunny and cold, with a high near 5. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 5 °F

    Mostly Sunny
    and Blustery
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around -4. West wind 5 to 10 mph.

    Low: -4 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 18. Southwest wind 5 to 10 mph.

    High: 18 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 12. South wind 5 to 10 mph becoming southwest after midnight.

    Low: 12 °F

    Chance Snow

Detailed Forecast

This Afternoon
Snow. High near 19. West wind 10 to 15 mph. Chance of precipitation is 90%. Total daytime snow accumulation of around an inch possible.
Tonight
Snow likely, mainly before 9pm. Mostly cloudy, with a low around 7. Wind chill values between -5 and 5. West wind around 10 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Sunday
Snow, mainly after noon. High near 19. Wind chill values between -10 and zero. Southwest wind 10 to 15 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Sunday Night
Snow, mainly before midnight. Low around -1. Wind chill values between -10 and -20. Blustery, with a southwest wind 10 to 15 mph becoming northwest 15 to 20 mph in the evening. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
M.L.King Day
Mostly sunny and cold, with a high near 5. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Monday Night
Partly cloudy, with a low around -4. West wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 18. Southwest wind 5 to 10 mph.
Tuesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 12. South wind 5 to 10 mph becoming southwest after midnight.
Wednesday
A 20 percent chance of snow. Mostly cloudy, with a high near 24.
Wednesday Night
Partly cloudy, with a low around 5.
Thursday
Mostly sunny, with a high near 17.
Thursday Night
Mostly cloudy, with a low around 7.
Friday
Partly sunny, with a high near 22.
Basemap Options
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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:
2:47 pm CST Jan 17, 2026
Forecast Valid:
2pm CST Jan 17, 2026-6pm CST Jan 23, 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