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.

Fair

24°F

-4°C

Humidity 50%
Wind Speed Calm
Barometer 30.39 in (1031.0 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 23 Feb 3:55 pm CST
Extended Forecast for

Wilton WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 11. Calm wind becoming south 5 to 9 mph after midnight. Winds could gust as high as 21 mph.

    Low: 11 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of snow between 9am and 3pm. Partly sunny, with a high near 36. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 9. Wind chill values as low as -3. Northwest wind 10 to 14 mph, with gusts as high as 28 mph.

    Low: 9 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 24. Wind chill values as low as -3. Northwest wind 5 to 9 mph becoming light west in the afternoon. Winds could gust as high as 20 mph.

    High: 24 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow, mainly after midnight. Partly cloudy, with a low around 10. Calm wind.

    Low: 10 °F

    Chance Snow

  • Thursday

    Thursday: A 20 percent chance of snow before noon. Mostly sunny, with a high near 36. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 36 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 22. Southwest wind 3 to 6 mph.

    Low: 22 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 51. Southwest wind 6 to 13 mph, with gusts as high as 23 mph.

    High: 51 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 19. West wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 22 mph.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 11. Calm wind becoming south 5 to 9 mph after midnight. Winds could gust as high as 21 mph.
Tuesday
A chance of snow between 9am and 3pm. Partly sunny, with a high near 36. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Tuesday Night
Partly cloudy, with a low around 9. Wind chill values as low as -3. Northwest wind 10 to 14 mph, with gusts as high as 28 mph.
Wednesday
Sunny, with a high near 24. Wind chill values as low as -3. Northwest wind 5 to 9 mph becoming light west in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
A 30 percent chance of snow, mainly after midnight. Partly cloudy, with a low around 10. Calm wind.
Thursday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 36. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 22. Southwest wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 51. Southwest wind 6 to 13 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 19. West wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 22 mph.
Saturday
A 20 percent chance of snow before noon. Partly sunny, with a high near 28. North wind 7 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 7. North wind around 7 mph.
Sunday
A 40 percent chance of snow. Mostly sunny, with a high near 24. Northeast wind 6 to 8 mph.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 10. East wind around 6 mph.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 31. East wind 5 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wilton WI
 43.81°N 90.52°W
Last Update:
3:16 pm CST Feb 23, 2026
Forecast Valid:
4pm CST Feb 23, 2026-6pm CST Mar 2, 2026
 
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Additional Resources

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Chance of Precipitation