National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

A Few Clouds

73°F

23°C

Humidity 96%
Wind Speed Calm
Barometer 29.92 in (1013.1 mb)
Dewpoint 72°F (22°C)
Visibility 9.00 mi
Last update 1 Sep 8:55 pm CDT
Extended Forecast for

5 Miles NE Sparta / Fort McCoy Airport WI

  • Tonight

    Tonight: A chance of showers and thunderstorms between 1am and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Mostly Cloudy
    then Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 86 °F

    Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly after 4am. Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear
    then Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. Light southeast wind. New precipitation amounts of less than a tenth of an inch possible.

    High: 86 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 86. Calm wind.

    High: 86 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 64. Calm wind. Chance of precipitation is 40%.

    Low: 64 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms between 1am and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
A 30 percent chance of showers, mainly after 4am. Partly cloudy, with a low around 66. Calm wind.
Thursday
A 40 percent chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. Light southeast wind. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. Light and variable wind.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 86. Calm wind.
Saturday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 64. Calm wind. Chance of precipitation is 40%.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 83. Light and variable wind.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 60. Calm wind.
Labor Day
A 20 percent chance of showers. Partly sunny, with a high near 78. Calm wind becoming east around 6 mph in the afternoon.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 56. East wind 3 to 5 mph.
Tuesday
A 40 percent chance of showers. Partly sunny, with a high near 78. Southeast wind 7 to 9 mph, with gusts as high as 21 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NE Sparta / Fort McCoy Airport WI
 44.01°N 90.69°W
Last Update:
6:41 pm CDT Sep 1, 2026
Forecast Valid:
9pm CDT Sep 1, 2026-6pm CDT Sep 8, 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