Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East; Severe Storm Threat in the Gulf States Sunday

A significant winter storm is underway, bringing widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Extremely cold air will follow, prolonging dangerous travel and infrastructure impacts into next week. Severe thunderstorms may produce damaging gusts and tornadoes across the eastern Gulf Coast states Sunday morning and afternoon. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

1°F

-17°C

Humidity 55%
Wind Speed N 5 mph
Barometer 30.29 in
Dewpoint -11°F (-24°C)
Visibility 10.00 mi
Wind Chill-9°F (-23°C)
Last update 25 Jan 3:35 am CST
Extended Forecast for

Janesville WI

Cold Weather Advisory January 26, 12:00am until January 26, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
  • Overnight

    Overnight: Mostly cloudy, with a low around -5. Wind chill values between -10 and -15. North wind around 5 mph.

    Low: -5 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy and cold, with a high near 9. Wind chill values between -5 and -15. North wind around 10 mph.

    High: 9 °F

    Cold

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -7. Wind chill values between -10 and -20. Northwest wind around 10 mph.

    Low: -7 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and cold, with a high near 10. Wind chill values between -15 and -25. Northwest wind around 10 mph becoming southwest in the afternoon.

    High: 10 °F

    Cold

  • Monday Night

    Monday Night: Mostly cloudy, with a temperature rising to around 11 by 5am. Southwest wind 10 to 15 mph.

    Low: 5 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 13. Northwest wind 10 to 15 mph.

    High: 13 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around -3. West wind 5 to 10 mph.

    Low: -3 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 11. Northwest wind 5 to 10 mph.

    High: 11 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -5.

    Low: -5 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around -5. Wind chill values between -10 and -15. North wind around 5 mph.
Sunday
Mostly cloudy and cold, with a high near 9. Wind chill values between -5 and -15. North wind around 10 mph.
Sunday Night
Partly cloudy, with a low around -7. Wind chill values between -10 and -20. Northwest wind around 10 mph.
Monday
Sunny and cold, with a high near 10. Wind chill values between -15 and -25. Northwest wind around 10 mph becoming southwest in the afternoon.
Monday Night
Mostly cloudy, with a temperature rising to around 11 by 5am. Southwest wind 10 to 15 mph.
Tuesday
Partly sunny, with a high near 13. Northwest wind 10 to 15 mph.
Tuesday Night
Mostly clear, with a low around -3. West wind 5 to 10 mph.
Wednesday
Partly sunny, with a high near 11. Northwest wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around -5.
Thursday
Mostly sunny, with a high near 11.
Thursday Night
Partly cloudy, with a low around -2.
Friday
Mostly sunny, with a high near 15.
Friday Night
A 20 percent chance of snow. Partly cloudy, with a low around 2.
Saturday
Mostly sunny, with a high near 18.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.67°N 89.04°W (Elev. 774 ft)
3:07 am CST Jan 25, 2026
3am CST Jan 25, 2026-6pm CST Jan 31, 2026
 
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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