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

55°F

13°C

Humidity 97%
Wind Speed Calm
Barometer 30.06 in (1018.2 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 5 Aug 10:55 pm CDT
Extended Forecast for

3 Miles ENE Sparta / Fort McCoy Airport WI

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, clear, with a low around 51. Calm wind.

    Low: 51 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 8am. Otherwise, sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Areas Fog
    then Sunny

  • Thursday Night

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

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 84. Light south wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    High: 84 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

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

    Low: 57 °F

    Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 82. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. Light southwest wind.

    Low: 61 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.

    High: 84 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, clear, with a low around 51. Calm wind.
Thursday
Areas of fog before 8am. Otherwise, sunny, with a high near 82. Light and variable wind.
Thursday Night
Mostly clear, with a low around 58. Calm wind.
Friday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 84. Light south wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 57. Southwest wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 82. Calm wind becoming southwest around 6 mph in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. Light southwest wind.
Sunday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. Calm wind.
Monday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 82. Light and variable wind.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 59. Calm wind.
Tuesday
Mostly sunny, with a high near 81. Calm wind.
Tuesday Night
Partly cloudy, with a low around 57. Calm wind.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 81. Calm wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Sparta / Fort McCoy Airport WI
 43.99°N 90.69°W
Last Update:
9:51 pm CDT Aug 5, 2026
Forecast Valid:
11pm CDT Aug 5, 2026-6pm CDT Aug 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation