Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

14°F

-10°C

Humidity 67%
Wind Speed N 12 mph
Barometer 30.02 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 31 Dec 11:10 pm CST
Extended Forecast for

5 Miles SSW Janesville WI

  • Tonight

    Tonight: Partly cloudy, with a low around 7. Wind chill values between -5 and zero. North wind 5 to 10 mph.

    Low: 7 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: A chance of snow between noon and 3pm.  Mostly cloudy, with a high near 18. Wind chill values between zero and 5. West wind around 5 mph.  Chance of precipitation is 30%.

    High: 18 °F

    Mostly Cloudy
    then Chance
    Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 10. West wind around 5 mph becoming calm  in the evening.

    Low: 10 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 23. Calm wind becoming northwest around 5 mph in the morning.

    High: 23 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 13. Northwest wind around 5 mph becoming calm.

    Low: 13 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 26. Calm wind becoming west around 5 mph in the afternoon.

    High: 26 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 10. Northwest wind around 5 mph becoming calm.

    Low: 10 °F

    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 27. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 27 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 20 percent chance of snow.  Cloudy, then gradually becoming partly cloudy, with a low around 22.

    Low: 22 °F

    Slight Chance
    Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 7. Wind chill values between -5 and zero. North wind 5 to 10 mph.
New Year's Day
A chance of snow between noon and 3pm. Mostly cloudy, with a high near 18. Wind chill values between zero and 5. West wind around 5 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 10. West wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 23. Calm wind becoming northwest around 5 mph in the morning.
Friday Night
Mostly cloudy, with a low around 13. Northwest wind around 5 mph becoming calm.
Saturday
Partly sunny, with a high near 26. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 10. Northwest wind around 5 mph becoming calm.
Sunday
Increasing clouds, with a high near 27. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Sunday Night
A 20 percent chance of snow. Cloudy, then gradually becoming partly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 37.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Mostly cloudy, with a high near 39.
Tuesday Night
Mostly cloudy, with a low around 23.
Wednesday
Partly sunny, with a high near 35.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Janesville WI
 42.63°N 89.04°W (Elev. 804 ft)
11:12 pm CST Dec 31, 2025
11pm CST Dec 31, 2025-6pm CST Jan 7, 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