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

Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East

A significant, long-duration winter storm will bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Widespread travel disruptions, prolonged power outages, and vast tree damage is likely. Frigid temperatures, gusty winds, and dangerous wind chills will expand from the north-central US to the Southern Plains, MS Valley, and Midwest. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Partly Cloudy

9°F

-13°C

Humidity 61%
Wind Speed W 20 G 28 mph
Barometer 30.23 in
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill-10°F (-23°C)
Last update 22 Jan 7:45 pm CST
Extended Forecast for

2 Miles NNW Beloit WI

Cold Weather Advisory January 23, 01:00pm until January 24, 12:00pm
Extreme Cold Warning January 23, 12:00am until January 23, 01:00pm
Click here for hazard details and duration
Cold Weather Advisory
Extreme Cold Warning

  • Tonight

    Tonight: Partly cloudy, with a low around -16. Wind chill values between -25 and -35. Northwest wind around 15 mph, with gusts as high as 30 mph.

    Low: -16 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and cold, with a high near -5. Wind chill values between -30 and -40. Northwest wind 10 to 15 mph.

    High: -5 °F

    Cold

  • Friday Night

    Friday Night: Increasing clouds, with a low around -14. Wind chill values between -20 and -25. North wind around 5 mph.

    Low: -14 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 20 percent chance of snow after noon. Mostly cloudy and cold, with a high near 3. Wind chill values between -15 and -25. North wind around 5 mph.

    High: 3 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around -2. Calm wind becoming north around 5 mph after midnight.

    Low: -2 °F

    Chance Snow

  • Sunday

    Sunday: A 30 percent chance of snow. Mostly cloudy, with a high near 11. North wind 5 to 10 mph.

    High: 11 °F

    Chance Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around -7. Northwest wind around 10 mph.

    Low: -7 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny and cold, with a high near 8. Northwest wind around 10 mph becoming southwest in the afternoon.

    High: 8 °F

    Cold

  • Monday Night

    Monday Night: Mostly cloudy, with a steady temperature around 6.

    Low: 6 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around -16. Wind chill values between -25 and -35. Northwest wind around 15 mph, with gusts as high as 30 mph.
Friday
Sunny and cold, with a high near -5. Wind chill values between -30 and -40. Northwest wind 10 to 15 mph.
Friday Night
Increasing clouds, with a low around -14. Wind chill values between -20 and -25. North wind around 5 mph.
Saturday
A 20 percent chance of snow after noon. Mostly cloudy and cold, with a high near 3. Wind chill values between -15 and -25. North wind around 5 mph.
Saturday Night
A 40 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around -2. Calm wind becoming north around 5 mph after midnight.
Sunday
A 30 percent chance of snow. Mostly cloudy, with a high near 11. North wind 5 to 10 mph.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around -7. Northwest wind around 10 mph.
Monday
Mostly sunny and cold, with a high near 8. Northwest wind around 10 mph becoming southwest in the afternoon.
Monday Night
Mostly cloudy, with a steady temperature around 6.
Tuesday
Partly sunny, with a high near 17.
Tuesday Night
Mostly cloudy, with a low around 1.
Wednesday
Partly sunny, with a high near 12.
Wednesday Night
Partly cloudy, with a low around -5.
Thursday
Mostly sunny and cold, with a high near 8.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Beloit WI
 42.56°N 89.04°W (Elev. 748 ft)
Last Update:
8:41 pm CST Jan 22, 2026
Forecast Valid:
8pm CST Jan 22, 2026-6pm CST Jan 29, 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