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

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

0°F

-18°C

Humidity 49%
Wind Speed Calm
Barometer 30.28 in (1028.9 mb)
Dewpoint -15°F (-26°C)
Visibility 10.00 mi
Last update 25 Jan 11:55 am CST
Extended Forecast for

Sparta WI

Cold Weather Advisory January 26, 12:00am until January 26, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory

  • This Afternoon

    This Afternoon: Sunny, with a high near 6. Wind chill values as low as -9. Northwest wind 6 to 8 mph.

    High: 6 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around -13. Wind chill values as low as -20. Northwest wind 3 to 6 mph.

    Low: -13 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 12. Wind chill values as low as -22. Light and variable wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

    High: 12 °F

    Sunny

  • Monday Night

    Monday Night: A chance of flurries before midnight. Mostly cloudy, with a low around 1. Wind chill values as low as -11. Southwest wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 23 mph.

    Low: 1 °F

    Chance
    Flurries

  • Tuesday

    Tuesday: Mostly sunny, with a high near 10. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.

    High: 10 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: -3 °F

    Partly 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 -5. Northwest wind around 5 mph becoming calm in the evening.

    Low: -5 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 13. Light northwest wind.

    High: 13 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 6. Wind chill values as low as -9. Northwest wind 6 to 8 mph.
Tonight
Mostly clear, with a low around -13. Wind chill values as low as -20. Northwest wind 3 to 6 mph.
Monday
Sunny, with a high near 12. Wind chill values as low as -22. Light and variable wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Monday Night
A chance of flurries before midnight. Mostly cloudy, with a low around 1. Wind chill values as low as -11. Southwest wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 23 mph.
Tuesday
Mostly sunny, with a high near 10. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around -3. West 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 -5. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 13. Light northwest wind.
Thursday Night
Mostly clear, with a low around -5. Calm wind.
Friday
Sunny, with a high near 16. Calm wind becoming northwest around 5 mph.
Friday Night
Mostly clear, with a low around -1. Calm wind.
Saturday
Sunny, with a high near 22. Calm wind becoming southwest around 5 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
1:31 pm CST Jan 25, 2026
Forecast Valid:
2pm CST Jan 25, 2026-6pm CST Jan 31, 2026
 
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