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

42°F

6°C

Humidity 68%
Wind Speed Calm
Barometer 29.88 in (1012.7 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 16 Feb 5:55 pm CST
Extended Forecast for

Wilton WI

  • Tonight

    Tonight: Partly cloudy, with a low around 34. Calm wind becoming east around 5 mph after midnight.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after 4pm. Mostly cloudy, with a high near 51. Breezy, with an east wind 6 to 16 mph, with gusts as high as 29 mph.

    High: 51 °F

    Mostly Cloudy
    then Slight
    Chance Rain
    and Breezy

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 2am. Mostly cloudy, with a low around 41. East wind 7 to 15 mph becoming south after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Rain Likely

  • Wednesday

    Wednesday: Sunny, with a high near 55. Breezy, with a west wind 8 to 18 mph, with gusts as high as 31 mph.

    High: 55 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before midnight. Mostly clear, with a low around 29. West wind 3 to 7 mph.

    Low: 29 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of rain after noon. Mostly sunny, with a high near 48. Light and variable wind becoming northeast 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 48 °F

    Mostly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Snow likely, possibly mixed with rain. Mostly cloudy, with a low around 28. Northeast wind around 9 mph becoming north after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 70%.

    Low: 28 °F

    Rain/Snow
    Likely

  • Friday

    Friday: Snow likely, mainly before noon. Mostly cloudy, with a high near 36. Northwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 36 °F

    Snow Likely

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 20. Northwest wind 5 to 7 mph.

    Low: 20 °F

    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 34. Calm wind becoming east around 5 mph after midnight.
Tuesday
A 20 percent chance of rain after 4pm. Mostly cloudy, with a high near 51. Breezy, with an east wind 6 to 16 mph, with gusts as high as 29 mph.
Tuesday Night
Rain likely, mainly before 2am. Mostly cloudy, with a low around 41. East wind 7 to 15 mph becoming south after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Sunny, with a high near 55. Breezy, with a west wind 8 to 18 mph, with gusts as high as 31 mph.
Wednesday Night
A 20 percent chance of rain before midnight. Mostly clear, with a low around 29. West wind 3 to 7 mph.
Thursday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 48. Light and variable wind becoming northeast 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Snow likely, possibly mixed with rain. Mostly cloudy, with a low around 28. Northeast wind around 9 mph becoming north after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 70%.
Friday
Snow likely, mainly before noon. Mostly cloudy, with a high near 36. Northwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 20. Northwest wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 33. Northwest wind 5 to 8 mph.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 16. Northwest wind 3 to 5 mph.
Sunday
Partly sunny, with a high near 30. Northwest wind 5 to 8 mph.
Sunday Night
Partly cloudy, with a low around 11. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 32. Calm wind becoming northwest around 6 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wilton WI
 43.81°N 90.52°W
Last Update:
5:31 pm CST Feb 16, 2026
Forecast Valid:
6pm CST Feb 16, 2026-6pm CST Feb 23, 2026
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation