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

56°F

13°C

Humidity 97%
Wind Speed Calm
Barometer 30.01 in (1016.2 mb)
Dewpoint 55°F (13°C)
Visibility 7.00 mi
Last update 4 Oct 4:55 am CDT
Extended Forecast for

3 Miles E Sparta / Fort McCoy Airport WI

  • Today

    Today: Sunny, with a high near 87. Breezy, with a south wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 87 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 63. South wind 9 to 11 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82. Breezy, with a south wind 9 to 14 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 82 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 52. South wind 6 to 13 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: A 40 percent chance of showers. Mostly cloudy, with a high near 66. North wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 43. Light northwest wind.

    Low: 43 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 64. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65. Light and variable wind.

    High: 65 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 87. Breezy, with a south wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Tonight
Mostly clear, with a low around 63. South wind 9 to 11 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 82. Breezy, with a south wind 9 to 14 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 52. South wind 6 to 13 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 66. North wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 43. Light northwest wind.
Tuesday
Sunny, with a high near 64. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 36. Calm wind.
Wednesday
Sunny, with a high near 65. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 38. Light southeast wind.
Thursday
Mostly sunny, with a high near 66. South wind 3 to 7 mph.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 47. South wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 68. Light and variable wind becoming west 5 to 7 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Sparta / Fort McCoy Airport WI
 43.97°N 90.66°W
Last Update:
5:28 am CDT Oct 4, 2025
Forecast Valid:
5am CDT Oct 4, 2025-6pm CDT Oct 10, 2025
 
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Additional Resources

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Chance of Precipitation