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

46°F

8°C

Humidity 99%
Wind Speed Calm
Barometer 29.95 in (1014.5 mb)
Dewpoint 46°F (8°C)
Visibility 7.00 mi
Last update 20 Jun 5:55 am CDT
Extended Forecast for

4 Miles SSE Sparta / Fort McCoy Airport WI

  • Today

    Today: Sunny, with a high near 75. Northwest wind 6 to 11 mph.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 51. Northwest wind around 6 mph becoming calm in the evening.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 74. Calm wind becoming east 5 to 7 mph in the morning.

    High: 74 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52. East wind around 6 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 76. Light northeast wind.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77. Calm wind.

    High: 77 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 55. Light south wind. Chance of precipitation is 70%.

    Low: 55 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 75. Light and variable wind becoming west 5 to 7 mph in the morning.

    High: 75 °F

    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 75. Northwest wind 6 to 11 mph.
Tonight
Partly cloudy, with a low around 51. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Mostly cloudy, with a high near 74. Calm wind becoming east 5 to 7 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 52. East wind around 6 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 76. Light northeast wind.
Monday Night
Partly cloudy, with a low around 52. Calm wind.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77. Calm wind.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 55. Light south wind. Chance of precipitation is 70%.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 75. Light and variable wind becoming west 5 to 7 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 53. Light north wind.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76. Light north wind.
Thursday Night
Partly cloudy, with a low around 53. Calm wind.
Friday
Mostly sunny, with a high near 79. Calm wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Sparta / Fort McCoy Airport WI
 43.9°N 90.7°W
Last Update:
5:47 am CDT Jun 20, 2026
Forecast Valid:
6am CDT Jun 20, 2026-6pm CDT Jun 26, 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