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

-9°F

-23°C

Humidity 42%
Wind Speed W 7 mph
Barometer 30.72 in (1044.3 mb)
Dewpoint -26°F (-32°C)
Visibility 10.00 mi
Wind Chill-24°F (-31°C)
Last update 23 Jan 2:55 pm CST
Extended Forecast for

Sparta WI

Cold Weather Advisory until January 24, 12:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory until January 24, 12:00am

    NOW until 12:00am Sat

    Cold Weather Advisory

  • This Afternoon

    High: -7 °F

    Cold

  • Tonight

    Tonight: Partly cloudy, with a low around -22. Northwest wind around 5 mph becoming calm in the evening.

    Low: -22 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 1. Wind chill values as low as -19. Calm wind.

    High: 1 °F

    Cold

  • Saturday Night

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

    Low: -13 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 7. Calm wind becoming north around 5 mph.

    High: 7 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -12. Light northwest wind.

    Low: -12 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 11. Light and variable wind becoming west around 6 mph in the morning.

    High: 11 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 1. Southwest wind around 6 mph becoming west after midnight. Winds could gust as high as 18 mph.

    Low: 1 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny and cold, with a high near -7. Wind chill values as low as -23. Northwest wind 6 to 8 mph.
Tonight
Partly cloudy, with a low around -22. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny and cold, with a high near 1. Wind chill values as low as -19. Calm wind.
Saturday Night
Mostly cloudy, with a low around -13. Calm wind.
Sunday
Mostly sunny, with a high near 7. Calm wind becoming north around 5 mph.
Sunday Night
Partly cloudy, with a low around -12. Light northwest wind.
Monday
Sunny, with a high near 11. Light and variable wind becoming west around 6 mph in the morning.
Monday Night
Mostly cloudy, with a low around 1. Southwest wind around 6 mph becoming west after midnight. Winds could gust as high as 18 mph.
Tuesday
Partly sunny, with a high near 13. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around -3. Northwest wind around 6 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 12. Calm wind becoming northwest around 6 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around -6. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 13. Calm wind becoming northwest around 6 mph.
Thursday Night
Partly cloudy, with a low around -2. Calm wind.
Friday
Mostly sunny, with a high near 18. Calm wind becoming northwest 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:
1:41 pm CST Jan 23, 2026
Forecast Valid:
3pm CST Jan 23, 2026-6pm CST Jan 30, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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