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 and Breezy

80°F

27°C

Humidity 26%
Wind Speed W 22 G 37 mph
Barometer 29.67 in (1004.8 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 12 May 2:55 pm CDT
Extended Forecast for

2 Miles NW Sparta / Fort McCoy Airport WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. Breezy, with a northwest wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 32 mph.

    Low: 45 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 70. Breezy, with a north wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 70 °F

    Mostly Sunny
    and Breezy
    then Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 39. North wind around 5 mph becoming calm in the evening.

    Low: 39 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 75. Light southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. South wind 7 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers
    Likely

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 85. Southwest wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 53. Southwest wind around 6 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 83. Calm wind becoming west 5 to 8 mph in the morning.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Calm wind becoming east around 6 mph after midnight.

    Low: 53 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 45. Breezy, with a northwest wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 32 mph.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 70. Breezy, with a north wind 11 to 16 mph, with gusts as high as 26 mph.
Wednesday Night
Clear, with a low around 39. North wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 75. Light southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. South wind 7 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 85. Southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Friday Night
Mostly clear, with a low around 53. Southwest wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 83. Calm wind becoming west 5 to 8 mph in the morning.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Calm wind becoming east around 6 mph after midnight.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 82. Breezy, with a southeast wind 9 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Southeast wind 7 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Monday
Showers likely. Mostly cloudy, with a high near 81. Southwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52. West wind 3 to 8 mph. Winds could gust as high as 21 mph.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 76. Northwest wind 5 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Sparta / Fort McCoy Airport WI
 43.97°N 90.78°W
Last Update:
1:26 pm CDT May 12, 2026
Forecast Valid:
3pm CDT May 12, 2026-6pm CDT May 19, 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