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

60°F

16°C

Humidity 96%
Wind Speed Calm
Barometer 29.95 in (1014.5 mb)
Dewpoint 59°F (15°C)
Visibility 9.00 mi
Last update 23 May 8:55 pm CDT
Extended Forecast for

3 Miles E Sparta / Fort McCoy Airport WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 81. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 10pm. Partly cloudy, with a low around 56. South wind 3 to 6 mph.

    Low: 56 °F

    Slight Chance
    Showers

  • Memorial Day

    Memorial Day: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 84. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. Light south wind.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90. Calm wind becoming southwest around 5 mph.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Calm wind becoming east around 6 mph in the afternoon.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58. Light east wind.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 50. Calm wind.
Sunday
Mostly sunny, with a high near 81. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Sunday Night
A 20 percent chance of showers after 10pm. Partly cloudy, with a low around 56. South wind 3 to 6 mph.
Memorial Day
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 84. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 59. Light south wind.
Tuesday
Sunny, with a high near 90. Calm wind becoming southwest around 5 mph.
Tuesday Night
Partly cloudy, with a low around 60. Calm wind.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Calm wind becoming east around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 58. Light east wind.
Thursday
Mostly sunny, with a high near 84. East wind 5 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 53. East wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 81. East wind 3 to 7 mph.
Friday Night
Partly cloudy, with a low around 52. East wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 80. Calm wind becoming east around 6 mph in the afternoon.
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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:
6:31 pm CDT May 23, 2026
Forecast Valid:
10pm CDT May 23, 2026-6pm CDT May 30, 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