Lake-Effect Snow through Friday; Strong Winds in the Northern and Central Plains

A clipper-like system will drop down from Canada on Thursday, bringing wintry weather from the Upper Midwest to the Great Lakes through Friday. This system is expected to bring strong northerly winds to much of the northern and central High Plains Thursday afternoon through Friday, with gusts up to 60 mph expected. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

12°F

-11°C

Humidity 79%
Wind Speed NW 8 mph
Barometer 30.04 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 15 Jan 3:55 am CST
Extended Forecast for

Darien WI

  • Today

    Today: A 30 percent chance of snow, mainly after 5pm.  Increasing clouds, with a high near 24. Wind chill values between zero and 10. Northwest wind 5 to 10 mph becoming southwest in the afternoon.

    High: 24 °F

    Sunny then
    Chance Snow

  • Tonight

    Tonight: Snow likely before midnight, then snow likely, possibly mixed with freezing rain.  Cloudy, with a temperature falling to near 21 by 10pm, then rising to around 28 during the remainder of the night. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.  Chance of precipitation is 70%. Little or no ice accumulation expected.  New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Snow Likely
    then Wintry
    Mix Likely

  • Friday

    Friday: A chance of snow and freezing rain before 8am, then a chance of snow.  Mostly cloudy, with a high near 34. West wind around 15 mph, with gusts as high as 30 mph.  Chance of precipitation is 50%.

    High: 34 °F

    Chance Wintry
    Mix then
    Chance Snow

  • Friday Night

    Friday Night: A 40 percent chance of snow.  Mostly cloudy, with a low around 11. Wind chill values between zero and 10. West wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 11 °F

    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow.  Mostly cloudy, with a high near 17. West wind 10 to 15 mph.

    High: 17 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 4. West wind around 10 mph.

    Low: 4 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of snow after noon.  Mostly cloudy, with a high near 14. Southwest wind 10 to 15 mph.

    High: 14 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight.  Mostly cloudy, with a low around 1. Breezy, with a west wind 10 to 20 mph.

    Low: 1 °F

    Slight Chance
    Snow then
    Mostly Cloudy
    and Breezy

  • M.L.King Day

    M.L.King Day: Partly sunny and cold, with a high near 7. Blustery.

    High: 7 °F

    Cold and
    Blustery

Detailed Forecast

Today
A 30 percent chance of snow, mainly after 5pm. Increasing clouds, with a high near 24. Wind chill values between zero and 10. Northwest wind 5 to 10 mph becoming southwest in the afternoon.
Tonight
Snow likely before midnight, then snow likely, possibly mixed with freezing rain. Cloudy, with a temperature falling to near 21 by 10pm, then rising to around 28 during the remainder of the night. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Friday
A chance of snow and freezing rain before 8am, then a chance of snow. Mostly cloudy, with a high near 34. West wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 11. Wind chill values between zero and 10. West wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 17. West wind 10 to 15 mph.
Saturday Night
Mostly cloudy, with a low around 4. West wind around 10 mph.
Sunday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 14. Southwest wind 10 to 15 mph.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 1. Breezy, with a west wind 10 to 20 mph.
M.L.King Day
Partly sunny and cold, with a high near 7. Blustery.
Monday Night
Partly cloudy, with a low around -3.
Tuesday
Mostly sunny, with a high near 11.
Tuesday Night
Mostly cloudy, with a low around 6.
Wednesday
Partly sunny, with a high near 22.
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ABOUT THIS FORECAST

 
Point Forecast:
Darien WI
 42.59°N 88.72°W (Elev. 945 ft)
3:07 am CST Jan 15, 2026
4am CST Jan 15, 2026-6pm CST Jan 21, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database