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.

Overcast

65°F

18°C

Humidity 33%
Wind Speed SE 15 G 21 mph
Barometer 30.07 in (1018.6 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 22 May 1:55 pm CDT
Extended Forecast for

2 Miles E Sparta / Fort McCoy Airport WI

  • This Afternoon

    This Afternoon: A 20 percent chance of showers before 3pm. Mostly cloudy, with a high near 69. Breezy, with an east wind around 17 mph, with gusts as high as 26 mph.

    High: 69 °F

    Slight Chance
    Showers and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. East wind 10 to 15 mph, with gusts as high as 28 mph.

    Low: 50 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 74. Southeast wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Partly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 50. Southeast wind around 5 mph becoming light and variable. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 80. West wind 3 to 7 mph.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 53. Calm wind. Chance of precipitation is 20%.

    Low: 53 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Memorial Day

    Memorial Day: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. South wind 3 to 8 mph.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 89. Light southwest wind.

    High: 89 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers before 3pm. Mostly cloudy, with a high near 69. Breezy, with an east wind around 17 mph, with gusts as high as 26 mph.
Tonight
Mostly cloudy, with a low around 50. East wind 10 to 15 mph, with gusts as high as 28 mph.
Saturday
A slight chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 74. Southeast wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms likely before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 50. Southeast wind around 5 mph becoming light and variable. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly sunny, with a high near 80. West wind 3 to 7 mph.
Sunday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 53. Calm wind. Chance of precipitation is 20%.
Memorial Day
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. South wind 3 to 8 mph.
Monday Night
Partly cloudy, with a low around 59. Calm wind.
Tuesday
Sunny, with a high near 89. Light southwest wind.
Tuesday Night
Partly cloudy, with a low around 59. Calm wind.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming east 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 58. East wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 84. East wind 3 to 7 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Sparta / Fort McCoy Airport WI
 43.97°N 90.69°W
Last Update:
1:26 pm CDT May 22, 2026
Forecast Valid:
2pm CDT May 22, 2026-6pm CDT May 28, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation