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 to heavy snow affects the region tonight through early Sunday morning, resulting in hazardous road conditions. Portions of northeast Iowa into southwest Wisconsin could see snowfall amounts of 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.

Mostly Cloudy

23°F

-5°C

Humidity 74%
Wind Speed Calm
Barometer 30.33 in (1028.7 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 28 Nov 4:55 pm CST
Extended Forecast for

Tunnel City WI

Winter Storm Warning November 29, 03:00am until November 30, 06:00am
Click here for hazard details and duration
Winter Storm Warning

  • Tonight

    Tonight: Snow likely, mainly after 4am. Cloudy, with a steady temperature around 19. Calm wind becoming east around 6 mph after midnight. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 19 °F

    Cloudy then
    Snow Likely

  • Saturday

    Saturday: Snow. High near 26. East wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 26 °F

    Snow

  • Saturday Night

    Saturday Night: Snow, mainly before 4am. Low around 17. Northeast wind 10 to 14 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 17 °F

    Snow

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 24. Northwest wind 8 to 14 mph, with gusts as high as 29 mph.

    High: 24 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 0. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 0 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 17. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 17 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 3. Southwest wind 3 to 5 mph.

    Low: 3 °F

    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 22. Southwest wind 3 to 6 mph.

    High: 22 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 9. Southwest wind around 6 mph.

    Low: 9 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Snow likely, mainly after 4am. Cloudy, with a steady temperature around 19. Calm wind becoming east around 6 mph after midnight. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Saturday
Snow. High near 26. East wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Saturday Night
Snow, mainly before 4am. Low around 17. Northeast wind 10 to 14 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 24. Northwest wind 8 to 14 mph, with gusts as high as 29 mph.
Sunday Night
Mostly cloudy, with a low around 0. Northwest wind 5 to 7 mph becoming calm in the evening.
Monday
Mostly cloudy, with a high near 17. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Monday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 3. Southwest wind 3 to 5 mph.
Tuesday
Partly sunny, with a high near 22. Southwest wind 3 to 6 mph.
Tuesday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 9. Southwest wind around 6 mph.
Wednesday
A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 26. Southwest wind 6 to 10 mph becoming northwest in the afternoon.
Wednesday Night
Mostly cloudy, with a low around -1. Northwest wind 5 to 7 mph.
Thursday
Mostly sunny, with a high near 17. West wind around 6 mph.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 2. Southwest wind around 6 mph.
Friday
A 20 percent chance of snow. Mostly cloudy, with a high near 25. Southwest wind 6 to 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tunnel City WI
 44.01°N 90.57°W
Last Update:
5:06 pm CST Nov 28, 2025
Forecast Valid:
5pm CST Nov 28, 2025-6pm CST Dec 5, 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