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

54°F

12°C

Humidity 98%
Wind Speed Calm
Barometer 29.97 in (1014.9 mb)
Dewpoint 53°F (12°C)
Visibility 8.00 mi
Last update 22 Aug 3:55 am CDT
Extended Forecast for

Wilton WI

  • Today

    Today: Patchy fog before 9am. Otherwise, sunny, with a high near 80. Northwest wind 5 to 15 mph, with gusts as high as 23 mph.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Clear, with a low around 49. Northwest wind 3 to 8 mph.

    Low: 49 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 77. Light northwest wind increasing to 5 to 10 mph in the morning.

    High: 77 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. Northwest wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 78. Calm wind.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers. Mostly sunny, with a high near 82. Calm wind becoming southwest 5 to 9 mph in the afternoon.

    High: 82 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62. Southwest wind 5 to 7 mph.

    Low: 62 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 83. West wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 83 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, sunny, with a high near 80. Northwest wind 5 to 15 mph, with gusts as high as 23 mph.
Tonight
Clear, with a low around 49. Northwest wind 3 to 8 mph.
Sunday
Sunny, with a high near 77. Light northwest wind increasing to 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 50. Northwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 78. Calm wind.
Monday Night
Partly cloudy, with a low around 56. Calm wind.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 82. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62. Southwest wind 5 to 7 mph.
Wednesday
Sunny, with a high near 83. West wind 5 to 13 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 59. West wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 82. Calm wind becoming northwest 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 58. Calm wind.
Friday
Mostly sunny, with a high near 83. Calm wind becoming south around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wilton WI
 43.81°N 90.52°W
Last Update:
4:41 am CDT Aug 22, 2026
Forecast Valid:
4am CDT Aug 22, 2026-6pm CDT Aug 28, 2026
 
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Additional Resources

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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