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

79°F

26°C

Humidity 41%
Wind Speed N 12 G 24 mph
Barometer 30.01 in (1016.3 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 22 Aug 1:55 pm CDT
Extended Forecast for

Sparta / Fort McCoy Airport WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 80. Northwest wind around 11 mph, with gusts as high as 21 mph.

    High: 80 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 47. Northwest wind around 5 mph becoming calm in the evening.

    Low: 47 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 80. Calm wind.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 83 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62. South wind 3 to 5 mph.

    Low: 62 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 84. Light southwest wind becoming west 6 to 11 mph in the morning.

    High: 84 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 80. Northwest wind around 11 mph, with gusts as high as 21 mph.
Tonight
Mostly clear, with a low around 47. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 78. Calm wind becoming northwest around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 46. Calm wind.
Monday
Mostly sunny, with a high near 80. Calm wind.
Monday Night
Partly cloudy, with a low around 54. Calm wind.
Tuesday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62. South wind 3 to 5 mph.
Wednesday
Sunny, with a high near 84. Light southwest wind becoming west 6 to 11 mph in the morning.
Wednesday Night
A 20 percent chance of showers before 1am. Mostly clear, with a low around 58. Northwest wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of showers. Sunny, with a high near 83. Calm wind becoming northwest 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 56. Calm wind.
Friday
Sunny, with a high near 83. Calm wind.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta / Fort McCoy Airport WI
 43.95°N 90.72°W
Last Update:
1:56 pm CDT Aug 22, 2026
Forecast Valid:
2pm CDT Aug 22, 2026-6pm CDT Aug 28, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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