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.

Partly Cloudy

26°F

-3°C

Humidity 77%
Wind Speed Calm
Barometer 30.29 in (1027.4 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 11 Jan 1:55 pm CST
Extended Forecast for

3 Miles S Tunnel City WI

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 29. West wind around 8 mph, with gusts as high as 18 mph.

    High: 29 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 25. Southwest wind 6 to 10 mph, with gusts as high as 23 mph.

    Low: 25 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 42. West wind 5 to 8 mph.

    High: 42 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 30. Southwest wind 3 to 8 mph. Winds could gust as high as 20 mph.

    Low: 30 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before noon. Partly sunny, with a high near 44. Breezy, with a west wind 13 to 17 mph, with gusts as high as 29 mph.

    High: 44 °F

    Chance Rain
    and Breezy

  • Tuesday Night

    Tuesday Night: A chance of rain and snow between midnight and 3am, then a chance of snow after 3am. Mostly cloudy, with a low around 21. Blustery, with a west wind 14 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.

    Low: 21 °F

    Cloudy then
    Chance
    Rain/Snow and
    Blustery

  • Wednesday

    Wednesday: A 30 percent chance of snow before noon. Partly sunny, with a high near 27. Blustery, with a north wind 16 to 21 mph, with gusts as high as 37 mph.

    High: 27 °F

    Blustery.
    Chance Snow
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 8. North wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 24 mph.

    Low: 8 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of snow after noon. Mostly sunny, with a high near 26. Calm wind becoming south around 6 mph in the morning.

    High: 26 °F

    Mostly Sunny
    then Chance
    Snow

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 29. West wind around 8 mph, with gusts as high as 18 mph.
Tonight
Partly cloudy, with a steady temperature around 25. Southwest wind 6 to 10 mph, with gusts as high as 23 mph.
Monday
Mostly sunny, with a high near 42. West wind 5 to 8 mph.
Monday Night
Increasing clouds, with a low around 30. Southwest wind 3 to 8 mph. Winds could gust as high as 20 mph.
Tuesday
A 30 percent chance of rain, mainly before noon. Partly sunny, with a high near 44. Breezy, with a west wind 13 to 17 mph, with gusts as high as 29 mph.
Tuesday Night
A chance of rain and snow between midnight and 3am, then a chance of snow after 3am. Mostly cloudy, with a low around 21. Blustery, with a west wind 14 to 20 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of snow before noon. Partly sunny, with a high near 27. Blustery, with a north wind 16 to 21 mph, with gusts as high as 37 mph.
Wednesday Night
Partly cloudy, with a low around 8. North wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 24 mph.
Thursday
A 30 percent chance of snow after noon. Mostly sunny, with a high near 26. Calm wind becoming south around 6 mph in the morning.
Thursday Night
Snow likely, mainly after midnight. Mostly cloudy, with a low around 19. South wind around 6 mph. Chance of precipitation is 60%.
Friday
Snow likely. Mostly cloudy, with a high near 29. South wind 6 to 9 mph becoming west in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 70%.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 9. Northwest wind around 9 mph, with gusts as high as 18 mph.
Saturday
A 20 percent chance of snow. Mostly cloudy, with a high near 19. Northwest wind around 10 mph, with gusts as high as 20 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Tunnel City WI
 43.94°N 90.54°W
Last Update:
1:01 pm CST Jan 11, 2026
Forecast Valid:
2pm CST Jan 11, 2026-6pm CST Jan 17, 2026
 
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Additional Resources

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Chance of Precipitation