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

-13°F

-25°C

Humidity 44%
Wind Speed W 9 mph
Barometer 30.76 in (1045.6 mb)
Dewpoint -29°F (-34°C)
Visibility 10.00 mi
Wind Chill-31°F (-35°C)
Last update 23 Jan 11:55 am CST
Extended Forecast for

Tunnel City 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: -8 °F

    Cold

  • Tonight

    Tonight: Partly cloudy, with a low around -25. Northwest wind around 6 mph becoming calm in the evening.

    Low: -25 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 0. Wind chill values as low as -22. Calm wind.

    High: 0 °F

    Cold

  • Saturday Night

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

    Low: -14 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 6. Calm wind becoming north around 6 mph in the afternoon.

    High: 6 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -14. Northwest wind around 6 mph.

    Low: -14 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 9. Northwest wind 6 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 9 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around -2. Southwest wind around 9 mph becoming west after midnight. Winds could gust as high as 21 mph.

    Low: -2 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny and cold, with a high near -8. Wind chill values as low as -31. Northwest wind 7 to 11 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around -25. Northwest wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny and cold, with a high near 0. Wind chill values as low as -22. Calm wind.
Saturday Night
Mostly cloudy, with a low around -14. Calm wind.
Sunday
Mostly sunny, with a high near 6. Calm wind becoming north around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around -14. Northwest wind around 6 mph.
Monday
Sunny, with a high near 9. Northwest wind 6 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Mostly cloudy, with a low around -2. Southwest wind around 9 mph becoming west after midnight. Winds could gust as high as 21 mph.
Tuesday
Partly sunny, with a high near 11. Northwest wind 8 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around -5. West wind 5 to 7 mph, with gusts as high as 18 mph.
Wednesday
Partly sunny, with a high near 10. West wind 5 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around -7. Northwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 11. Northwest wind 5 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tunnel City WI
 44.01°N 90.57°W
Last Update:
12:36 pm CST Jan 23, 2026
Forecast Valid:
12pm CST Jan 23, 2026-6pm CST Jan 29, 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