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.

Overcast

26°F

-3°C

Humidity 75%
Wind Speed Calm
Barometer 30.34 in (1029.1 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 11 Jan 10:55 am CST
Extended Forecast for

4 Miles S Sparta / Fort McCoy Airport WI

  • Today

    Today: Mostly cloudy, with a high near 30. West wind 6 to 8 mph becoming southwest in the afternoon.

    High: 30 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy during the early evening, then becoming mostly clear, with a steady temperature around 26. Southwest wind 5 to 8 mph, with gusts as high as 21 mph.

    Low: 26 °F

    Mostly Clear

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 43. West wind around 6 mph becoming calm in the afternoon.

    High: 43 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Increasing clouds, with a low around 30. Calm wind becoming southwest 5 to 7 mph in the evening. 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 45. West wind 7 to 13 mph, with gusts as high as 23 mph.

    High: 45 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 21. Northwest wind around 10 mph, with gusts as high as 24 mph.

    Low: 21 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow before noon. Partly sunny, with a high near 27. North wind 7 to 10 mph, with gusts as high as 23 mph.

    High: 27 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 12. North wind around 6 mph becoming calm in the evening.

    Low: 12 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of snow after noon. Partly sunny, with a high near 30. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 18 mph.

    High: 30 °F

    Partly Sunny
    then Chance
    Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 30. West wind 6 to 8 mph becoming southwest in the afternoon.
Tonight
Mostly cloudy during the early evening, then becoming mostly clear, with a steady temperature around 26. Southwest wind 5 to 8 mph, with gusts as high as 21 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 43. West wind around 6 mph becoming calm in the afternoon.
Monday Night
Increasing clouds, with a low around 30. Calm wind becoming southwest 5 to 7 mph in the evening. Winds could gust as high as 20 mph.
Tuesday
A 30 percent chance of rain, mainly before noon. Partly sunny, with a high near 45. West wind 7 to 13 mph, with gusts as high as 23 mph.
Tuesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 21. Northwest wind around 10 mph, with gusts as high as 24 mph.
Wednesday
A 20 percent chance of snow before noon. Partly sunny, with a high near 27. North wind 7 to 10 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 12. North wind around 6 mph becoming calm in the evening.
Thursday
A 40 percent chance of snow after noon. Partly sunny, with a high near 30. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
Snow likely. Mostly cloudy, with a low around 20. Southwest wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Friday
Snow likely. Mostly cloudy, with a high near 31. West wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 10. Northwest wind 7 to 9 mph, with gusts as high as 20 mph.
Saturday
Mostly cloudy, with a high near 19. West wind 7 to 10 mph, with gusts as high as 18 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Sparta / Fort McCoy Airport WI
 43.91°N 90.76°W
Last Update:
11:01 am CST Jan 11, 2026
Forecast Valid:
11am CST Jan 11, 2026-6pm CST Jan 17, 2026
 
Forecast Discussion
 
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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