Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East

A significant, long-duration winter storm will bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Widespread travel disruptions, prolonged power outages, and vast tree damage is likely. Frigid temperatures, gusty winds, and dangerous wind chills will expand from the north-central US to the Southern Plains, MS Valley, and Midwest. Read More >

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

-10°F

-23°C

Humidity 70%
Wind Speed Calm
Barometer 30.48 in (1036.5 mb)
Dewpoint -17°F (-27°C)
Visibility 10.00 mi
Last update 24 Jan 7:55 pm CST
Extended Forecast for

Tomah WI

  • Tonight

    Tonight: Mostly cloudy, with a low around -14. Calm wind.

    Low: -14 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 7. Wind chill values as low as -17. Calm wind becoming northwest 5 to 8 mph in the morning.

    High: 7 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -15. Wind chill values as low as -27. Northwest wind around 6 mph.

    Low: -15 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 12. Wind chill values as low as -28. West wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 12 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around -1. Southwest wind 8 to 10 mph becoming northwest after midnight. Winds could gust as high as 23 mph.

    Low: -1 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 12. Northwest wind 7 to 11 mph, with gusts as high as 23 mph.

    High: 12 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around -4. West wind 3 to 6 mph.

    Low: -4 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 10. West wind 3 to 7 mph.

    High: 10 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -5. Northwest wind 3 to 6 mph.

    Low: -5 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around -14. Calm wind.
Sunday
Mostly sunny, with a high near 7. Wind chill values as low as -17. Calm wind becoming northwest 5 to 8 mph in the morning.
Sunday Night
Partly cloudy, with a low around -15. Wind chill values as low as -27. Northwest wind around 6 mph.
Monday
Mostly sunny, with a high near 12. Wind chill values as low as -28. West wind 6 to 10 mph, with gusts as high as 21 mph.
Monday Night
Mostly cloudy, with a low around -1. Southwest wind 8 to 10 mph becoming northwest after midnight. Winds could gust as high as 23 mph.
Tuesday
Partly sunny, with a high near 12. Northwest wind 7 to 11 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around -4. West wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 10. West wind 3 to 7 mph.
Wednesday Night
Partly cloudy, with a low around -5. Northwest wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 14. Northwest wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around -4. Calm wind.
Friday
Mostly sunny, with a high near 17. Calm wind becoming northwest around 5 mph.
Friday Night
Partly cloudy, with a low around 0. Calm wind.
Saturday
Mostly sunny, with a high near 22. Calm wind becoming west around 6 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
Tomah WI
 43.99°N 90.51°W
5:21 pm CST Jan 24, 2026
8pm CST Jan 24, 2026-6pm CST Jan 31, 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