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

79°F

26°C

Humidity 67%
Wind Speed W 12 mph
Barometer 29.98 in (1015.2 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 4 Aug 2:55 pm CDT
Extended Forecast for

3 Miles S Wilton WI

  • This Afternoon

    This Afternoon: Isolated showers after 5pm. Mostly cloudy, with a high near 78. West wind around 7 mph. Chance of precipitation is 10%.

    High: 78 °F

    Isolated
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely. Cloudy, with a low around 58. Light west wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Isolated showers before 7am. Partly sunny, with a high near 78. Light northwest wind. Chance of precipitation is 10%.

    High: 78 °F

    Isolated
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 53. Calm wind.

    Low: 53 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. Light south wind.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 83. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers. Partly cloudy, with a low around 60. Southwest wind 5 to 9 mph becoming light in the evening. Winds could gust as high as 18 mph.

    Low: 60 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before 1pm. Sunny, with a high near 83. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 83 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
Isolated showers after 5pm. Mostly cloudy, with a high near 78. West wind around 7 mph. Chance of precipitation is 10%.
Tonight
Showers and thunderstorms likely. Cloudy, with a low around 58. Light west wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Isolated showers before 7am. Partly sunny, with a high near 78. Light northwest wind. Chance of precipitation is 10%.
Wednesday Night
Increasing clouds, with a low around 53. Calm wind.
Thursday
Mostly sunny, with a high near 82. Light and variable wind.
Thursday Night
Mostly clear, with a low around 57. Light south wind.
Friday
Sunny, with a high near 83. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 60. Southwest wind 5 to 9 mph becoming light in the evening. Winds could gust as high as 18 mph.
Saturday
A 20 percent chance of showers before 1pm. Sunny, with a high near 83. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. Calm wind becoming west 5 to 7 mph in the afternoon.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64. West wind around 5 mph becoming calm in the evening.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Calm wind becoming northeast around 6 mph in the morning.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. North wind around 6 mph becoming calm in the evening.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 80. Calm wind becoming northeast around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Wilton WI
 43.77°N 90.52°W
Last Update:
1:26 pm CDT Aug 4, 2026
Forecast Valid:
3pm CDT Aug 4, 2026-6pm CDT Aug 11, 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