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

Winter Storm and Cold for the Weekend

A prolonged period of moderate snow affects the region from Friday night through early Sunday morning, potentially resulting in hazardous road conditions. Portions of northeast Iowa into southwest Wisconsin could see snowfall amounts of 9-12+". Colder air arrives for Sunday through Tuesday with overnight wind chills in the single digits to teens below zero. Read More >

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Overcast

27°F

-3°C

Humidity 63%
Wind Speed NW 6 mph
Barometer 30.28 in (1027.0 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 27 Nov 4:55 pm CST
Extended Forecast for

4 Miles NNW Tunnel City WI

Winter Storm Watch November 29, 12:00am until November 30, 06:00am
Click here for hazard details and duration
Winter Storm Watch

  • Thanksgiving Day

    Thanksgiving Day: A 30 percent chance of snow. Mostly cloudy, with a high near 26. Northwest wind around 13 mph, with gusts as high as 22 mph.

    High: 26 °F

    Chance Snow

  • Tonight

    Tonight: A chance of snow before 9pm, then scattered flurries between 9pm and 11pm. Mostly cloudy, with a low around 14. Northwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 14 °F

    Chance Snow
    then Mostly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 26. Northwest wind 3 to 8 mph. Winds could gust as high as 18 mph.

    High: 26 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 50 percent chance of snow, mainly after 1am. Cloudy, with a low around 13. Calm wind becoming east 5 to 7 mph after midnight. New snow accumulation of less than a half inch possible.

    Low: 13 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow. High near 25. East wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    High: 25 °F

    Snow

  • Saturday Night

    Saturday Night: Snow. Low around 15. Northeast wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 15 °F

    Snow then
    Snow Likely

  • Sunday

    Sunday: Partly sunny, with a high near 21. Northwest wind 9 to 13 mph, with gusts as high as 23 mph.

    High: 21 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -3. West wind 5 to 8 mph becoming calm after midnight.

    Low: -3 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 16. Calm wind becoming southwest around 6 mph.

    High: 16 °F

    Partly Sunny

Detailed Forecast

Thanksgiving Day
A 30 percent chance of snow. Mostly cloudy, with a high near 26. Northwest wind around 13 mph, with gusts as high as 22 mph.
Tonight
A chance of snow before 9pm, then scattered flurries between 9pm and 11pm. Mostly cloudy, with a low around 14. Northwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 26. Northwest wind 3 to 8 mph. Winds could gust as high as 18 mph.
Friday Night
A 50 percent chance of snow, mainly after 1am. Cloudy, with a low around 13. Calm wind becoming east 5 to 7 mph after midnight. New snow accumulation of less than a half inch possible.
Saturday
Snow. High near 25. East wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Saturday Night
Snow. Low around 15. Northeast wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Sunday
Partly sunny, with a high near 21. Northwest wind 9 to 13 mph, with gusts as high as 23 mph.
Sunday Night
Mostly cloudy, with a low around -3. West wind 5 to 8 mph becoming calm after midnight.
Monday
Partly sunny, with a high near 16. Calm wind becoming southwest around 6 mph.
Monday Night
Mostly cloudy, with a low around 1. Southwest wind 3 to 7 mph.
Tuesday
Partly sunny, with a high near 21. Southwest wind around 7 mph.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 7. Southwest wind around 7 mph.
Wednesday
Mostly cloudy, with a high near 25. Southwest wind 6 to 8 mph becoming northwest in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 1. Northwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 20. Southwest wind around 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Tunnel City WI
 44.05°N 90.6°W
Last Update:
5:06 pm CST Nov 27, 2025
Forecast Valid:
5pm CST Nov 27, 2025-6pm CST Dec 4, 2025
 
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