Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East; Severe Storm Threat in the Gulf States Sunday

A significant winter storm is underway, bringing widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Extremely cold air will follow, prolonging dangerous travel and infrastructure impacts into next week. Severe thunderstorms may produce damaging gusts and tornadoes across the eastern Gulf Coast states Sunday morning and afternoon. Read More >

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

-12°F

-24°C

Humidity 76%
Wind Speed Calm
Barometer 30.44 in (1034.6 mb)
Dewpoint -17°F (-27°C)
Visibility 10.00 mi
Last update 24 Jan 10:55 pm CST
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Mostly cloudy, with a low around -13. Calm wind.

    Low: -13 °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 -14. Wind chill values as low as -22. Northwest wind 3 to 6 mph.

    Low: -14 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 12. Wind chill values as low as -23. Light and variable wind becoming west 5 to 8 mph in the morning. Winds could gust as high as 18 mph.

    High: 12 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 2. Southwest wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 2 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 12. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 12 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around -3. Northwest wind around 5 mph becoming calm  in the evening.

    Low: -3 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 11. Calm wind becoming northwest 5 to 7 mph in the morning.

    High: 11 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -4. Northwest wind around 5 mph becoming calm  in the evening.

    Low: -4 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around -13. 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 -14. Wind chill values as low as -22. Northwest wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 12. Wind chill values as low as -23. Light and variable wind becoming west 5 to 8 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 2. Southwest wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
Tuesday
Partly sunny, with a high near 12. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around -3. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 11. Calm wind becoming northwest 5 to 7 mph in the morning.
Wednesday Night
Partly cloudy, with a low around -4. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 14. Calm wind becoming northwest around 5 mph.
Thursday Night
Mostly clear, with a low around -4. Calm wind.
Friday
Mostly sunny, with a high near 17. Light northwest wind.
Friday Night
Partly cloudy, with a low around 0. Calm wind.
Saturday
Mostly sunny, with a high near 22. Calm wind becoming west around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
10:36 pm CST Jan 24, 2026
11pm 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