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

28°F

-2°C

Humidity 91%
Wind Speed Calm
Barometer 29.91 in (1013.9 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 16 Feb 10:55 pm CST
Extended Forecast for

Wilton WI

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 36. Calm wind becoming east around 5 mph after midnight.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after 4pm. Mostly cloudy, with a high near 52. Breezy, with an east wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 52 °F

    Partly Sunny
    then Slight
    Chance Rain
    and Breezy

  • Tuesday Night

    Tuesday Night: Rain likely and possibly a thunderstorm before 2am, then a chance of rain. Mostly cloudy, with a low around 41. Breezy, with an east wind 15 to 20 mph becoming southwest 8 to 13 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Rain Likely
    and Breezy

  • Wednesday

    Wednesday: A 20 percent chance of rain before noon. Mostly sunny, with a high near 57. Breezy, with a west wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 36 mph.

    High: 57 °F

    Breezy.
    Slight Chance
    Rain then
    Mostly Sunny

  • 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 steady temperature around 36. Calm wind becoming east around 5 mph after midnight.
Tuesday
A 20 percent chance of rain after 4pm. Mostly cloudy, with a high near 52. Breezy, with an east wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 31 mph.
Tuesday Night
Rain likely and possibly a thunderstorm before 2am, then a chance of rain. Mostly cloudy, with a low around 41. Breezy, with an east wind 15 to 20 mph becoming southwest 8 to 13 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of rain before noon. Mostly sunny, with a high near 57. Breezy, with a west wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 36 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:
10:56 pm CST Feb 16, 2026
Forecast Valid:
11pm CST Feb 16, 2026-6pm CST Feb 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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