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

-15°F

-26°C

Humidity 44%
Wind Speed W 8 mph
Barometer 30.76 in (1045.6 mb)
Dewpoint -31°F (-35°C)
Visibility 10.00 mi
Wind Chill-32°F (-36°C)
Last update 23 Jan 10:55 am CST
Extended Forecast for

Sparta WI

Cold Weather Advisory January 23, 12:00pm until January 24, 12:00am
Extreme Cold Warning January 23, 11:50am until January 23, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
Extreme Cold Warning
  •  
    Extreme Cold Warning January 23, 11:50am until January 23, 12:00pm

    NOW until 12:00pm Fri

    Extreme Cold Warning

  • Today

    High: -7 °F

    Cold

  • Tonight

    Tonight: Partly cloudy, with a low around -19. Northwest wind around 5 mph becoming calm in the evening.

    Low: -19 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 0. Wind chill values as low as -17. Calm wind.

    High: 0 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -12. Calm wind.

    Low: -12 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 7. Light north wind.

    High: 7 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -14. Calm wind.

    Low: -14 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 11. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 11 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 1. Southwest wind around 6 mph becoming west after midnight.

    Low: 1 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny and cold, with a high near -7. Wind chill values as low as -29. Northwest wind 6 to 9 mph, with gusts as high as 18 mph.
Tonight
Partly cloudy, with a low around -19. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny and cold, with a high near 0. Wind chill values as low as -17. Calm wind.
Saturday Night
Mostly cloudy, with a low around -12. Calm wind.
Sunday
Mostly sunny, with a high near 7. Light north wind.
Sunday Night
Partly cloudy, with a low around -14. Calm wind.
Monday
Mostly sunny, with a high near 11. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 1. Southwest wind around 6 mph becoming west after midnight.
Tuesday
Partly sunny, with a high near 15. Northwest wind 5 to 9 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly cloudy, with a low around -4. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 11. Calm wind becoming northwest around 6 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around -6. Light northwest wind.
Thursday
Mostly sunny, with a high near 12. Northwest wind 3 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
11:21 am CST Jan 23, 2026
Forecast Valid:
11am CST Jan 23, 2026-6pm CST Jan 29, 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