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

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Light Unknown Precip

16°F

-9°C

Humidity 73%
Wind Speed NW 5 mph
Barometer 30.50 in (1035.0 mb)
Dewpoint 8°F (-13°C)
Visibility 6.00 mi
Wind Chill8°F (-13°C)
Last update 22 Feb 6:55 pm CST
Extended Forecast for

Tunnel City WI

  • Tonight

    Tonight: A chance of flurries before 8pm. Mostly cloudy, with a low around 4. Wind chill values as low as -7. Northwest wind 7 to 11 mph, with gusts as high as 23 mph.

    Low: 4 °F

    Chance
    Flurries

  • Monday

    Monday: Sunny, with a high near 23. Wind chill values as low as -8. North wind 5 to 8 mph becoming calm in the afternoon.

    High: 23 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 10. Calm wind becoming south 5 to 8 mph after midnight. Winds could gust as high as 18 mph.

    Low: 10 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Snow likely, mainly before noon. Mostly cloudy, with a high near 35. South wind 9 to 11 mph becoming west in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Snow Likely

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 9. Northwest wind 9 to 13 mph, with gusts as high as 24 mph.

    Low: 9 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 24. West wind 3 to 8 mph.

    High: 24 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 9. Light and variable wind.

    Low: 9 °F

    Chance Snow

  • Thursday

    Thursday: A 20 percent chance of snow before noon. Mostly sunny, with a high near 33. Light and variable wind becoming west around 6 mph in the morning.

    High: 33 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 18. Southwest wind around 6 mph.

    Low: 18 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of flurries before 8pm. Mostly cloudy, with a low around 4. Wind chill values as low as -7. Northwest wind 7 to 11 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 23. Wind chill values as low as -8. North wind 5 to 8 mph becoming calm in the afternoon.
Monday Night
Mostly cloudy, with a low around 10. Calm wind becoming south 5 to 8 mph after midnight. Winds could gust as high as 18 mph.
Tuesday
Snow likely, mainly before noon. Mostly cloudy, with a high near 35. South wind 9 to 11 mph becoming west in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Tuesday Night
Mostly cloudy, with a low around 9. Northwest wind 9 to 13 mph, with gusts as high as 24 mph.
Wednesday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 24. West wind 3 to 8 mph.
Wednesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 9. Light and variable wind.
Thursday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 33. Light and variable wind becoming west around 6 mph in the morning.
Thursday Night
Mostly clear, with a low around 18. Southwest wind around 6 mph.
Friday
Mostly sunny, with a high near 46. Southwest wind 6 to 11 mph, with gusts as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 19. Southwest wind around 8 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
Saturday
A 20 percent chance of snow. Partly sunny, with a high near 34. Northwest wind 8 to 11 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 7. Northwest wind 6 to 8 mph, with gusts as high as 18 mph.
Sunday
Mostly sunny, with a high near 27. North wind around 7 mph becoming northeast in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tunnel City WI
 44.01°N 90.57°W
Last Update:
5:46 pm CST Feb 22, 2026
Forecast Valid:
7pm CST Feb 22, 2026-6pm CST Mar 1, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation