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.

A Few Clouds

23°F

-5°C

Humidity 73%
Wind Speed Calm
Barometer 30.30 in (1027.6 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 27 Nov 10:55 pm CST
Extended Forecast for

Tomah WI

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

  • Tonight

    Tonight: Isolated flurries before 2am. Mostly cloudy, with a low around 14. Northwest wind around 7 mph, with gusts as high as 18 mph.

    Low: 14 °F

    Isolated
    Flurries

  • Friday

    Friday: Mostly cloudy, with a high near 27. Northwest wind 5 to 7 mph becoming calm in the afternoon.

    High: 27 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 50 percent chance of snow, mainly after 1am. Cloudy, with a low around 14. Calm wind. New snow accumulation of less than a half inch possible.

    Low: 14 °F

    Cloudy then
    Chance Snow

  • Saturday

    Saturday: Snow. High near 27. Calm wind becoming east 5 to 8 mph in the morning. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    High: 27 °F

    Snow

  • Saturday Night

    Saturday Night: Snow. Low around 16. Northeast wind 6 to 9 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 16 °F

    Snow then
    Snow Likely

  • Sunday

    Sunday: Partly sunny, with a high near 23. Northwest wind 8 to 13 mph, with gusts as high as 24 mph.

    High: 23 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -1. West wind 5 to 7 mph becoming calm in the evening.

    Low: -1 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 18. Calm wind becoming southwest around 5 mph.

    High: 18 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 2. Light southwest wind.

    Low: 2 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Isolated flurries before 2am. Mostly cloudy, with a low around 14. Northwest wind around 7 mph, with gusts as high as 18 mph.
Friday
Mostly cloudy, with a high near 27. Northwest wind 5 to 7 mph becoming calm in the afternoon.
Friday Night
A 50 percent chance of snow, mainly after 1am. Cloudy, with a low around 14. Calm wind. New snow accumulation of less than a half inch possible.
Saturday
Snow. High near 27. Calm wind becoming east 5 to 8 mph in the morning. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Saturday Night
Snow. Low around 16. Northeast wind 6 to 9 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Sunday
Partly sunny, with a high near 23. Northwest wind 8 to 13 mph, with gusts as high as 24 mph.
Sunday Night
Mostly cloudy, with a low around -1. West wind 5 to 7 mph becoming calm in the evening.
Monday
Partly sunny, with a high near 18. Calm wind becoming southwest around 5 mph.
Monday Night
Mostly cloudy, with a low around 2. Light southwest wind.
Tuesday
Partly sunny, with a high near 22. Southwest wind 3 to 7 mph.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 8. Light southwest wind.
Wednesday
Mostly cloudy, with a high near 26. Light and variable wind becoming west 5 to 8 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 2. Light northwest wind.
Thursday
Mostly sunny, with a high near 21. West wind 3 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.99°N 90.51°W
Last Update:
11:11 pm CST Nov 27, 2025
Forecast Valid:
11pm CST Nov 27, 2025-6pm CST Dec 4, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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