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.

A Few Clouds

20°F

-7°C

Humidity 91%
Wind Speed Calm
Barometer 30.05 in (1019.2 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 12 Jan 8:55 am CST
Extended Forecast for

2 Miles WNW Sparta / Fort McCoy Airport WI

  • Today

    Today: Sunny, with a high near 43. West wind 3 to 7 mph.

    High: 43 °F

    Sunny

  • Tonight

    Tonight: A 40 percent chance of rain, mainly after 2am. Mostly cloudy, with a low around 30. Calm wind becoming southwest 5 to 7 mph after midnight. Winds could gust as high as 18 mph.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before noon. Partly sunny, with a high near 45. West wind 6 to 13 mph, with gusts as high as 23 mph.

    High: 45 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 19. Northwest wind 8 to 11 mph, with gusts as high as 25 mph.

    Low: 19 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of snow before noon. Partly sunny, with a high near 27. Blustery, with a north wind 10 to 16 mph, with gusts as high as 28 mph.

    High: 27 °F

    Blustery.
    Slight Chance
    Snow then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 7. North wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 22 mph.

    Low: 7 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of snow after noon. Mostly sunny, with a high near 27. Calm wind becoming south around 6 mph in the afternoon.

    High: 27 °F

    Mostly Sunny
    then Chance
    Snow

  • Thursday Night

    Thursday Night: Snow likely. Mostly cloudy, with a low around 20. South wind around 5 mph. Chance of precipitation is 70%.

    Low: 20 °F

    Snow Likely

  • Friday

    Friday: Snow. High near 31. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 31 °F

    Snow

Detailed Forecast

Today
Sunny, with a high near 43. West wind 3 to 7 mph.
Tonight
A 40 percent chance of rain, mainly after 2am. Mostly cloudy, with a low around 30. Calm wind becoming southwest 5 to 7 mph after midnight. Winds could gust as high as 18 mph.
Tuesday
A 30 percent chance of rain, mainly before noon. Partly sunny, with a high near 45. West wind 6 to 13 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 19. Northwest wind 8 to 11 mph, with gusts as high as 25 mph.
Wednesday
A 20 percent chance of snow before noon. Partly sunny, with a high near 27. Blustery, with a north wind 10 to 16 mph, with gusts as high as 28 mph.
Wednesday Night
Mostly clear, with a low around 7. North wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 22 mph.
Thursday
A 30 percent chance of snow after noon. Mostly sunny, with a high near 27. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Snow likely. Mostly cloudy, with a low around 20. South wind around 5 mph. Chance of precipitation is 70%.
Friday
Snow. High near 31. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 8. Northwest wind around 7 mph, with gusts as high as 20 mph.
Saturday
A 30 percent chance of snow. Mostly cloudy, with a high near 15. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around -1. Northwest wind around 6 mph, with gusts as high as 18 mph.
Sunday
Partly sunny, with a high near 18. West wind 6 to 10 mph, with gusts as high as 18 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Sparta / Fort McCoy Airport WI
 43.97°N 90.78°W
Last Update:
6:51 am CST Jan 12, 2026
Forecast Valid:
9am CST Jan 12, 2026-6pm CST Jan 18, 2026
 
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Additional Resources

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Chance of Precipitation