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

61°F

16°C

Humidity 95%
Wind Speed Calm
Barometer 30.11 in (1019.9 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 6 Aug 8:55 am CDT
Extended Forecast for

3 Miles NE Sparta / Fort McCoy Airport WI

  • Today

    Today: Sunny, with a high near 83. Light south wind.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers, then showers and thunderstorms likely after 4pm. Mostly sunny, with a high near 85. Light south wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Mostly Sunny
    then T-storms
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 57. West wind around 6 mph becoming calm in the evening.

    Low: 57 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 83. Calm wind becoming west around 5 mph in the afternoon.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 85. Light southwest wind.

    High: 85 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 83 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 83. Light south wind.
Tonight
Mostly clear, with a low around 58. Calm wind.
Friday
A chance of showers, then showers and thunderstorms likely after 4pm. Mostly sunny, with a high near 85. Light south wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 57. West wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 83. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. Calm wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly sunny, with a high near 85. Light southwest wind.
Sunday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 62. Calm wind.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 59. Calm wind.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 82. Light northeast wind.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 58. Calm wind.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80. Light and variable wind.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Sparta / Fort McCoy Airport WI
 43.99°N 90.69°W
Last Update:
9:02 am CDT Aug 6, 2026
Forecast Valid:
9am CDT Aug 6, 2026-6pm CDT Aug 12, 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