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.

A Few Clouds

64°F

18°C

Humidity 55%
Wind Speed E 5 mph
Barometer 30.31 in (1026.9 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 22 Sep 4:55 pm CDT
Extended Forecast for

4 Miles S Tomah WI

  • Tonight

    Tonight: Mostly clear, with a low around 37. East wind 5 to 7 mph becoming calm in the evening.

    Low: 37 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64. East wind 3 to 7 mph.

    High: 64 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 45. East wind around 5 mph becoming calm in the evening.

    Low: 45 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 66. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 66 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 67. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 67 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 48. Light southeast wind.

    Low: 48 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 65. Light southeast wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 50. Southeast wind 3 to 5 mph.

    Low: 50 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 37. East wind 5 to 7 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 64. East wind 3 to 7 mph.
Wednesday Night
Increasing clouds, with a low around 45. East wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 66. Calm wind becoming southeast around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 48. Calm wind.
Friday
Partly sunny, with a high near 67. Calm wind becoming southeast around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 48. Light southeast wind.
Saturday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 65. Light southeast wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 50. Southeast wind 3 to 5 mph.
Sunday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 67. South wind 3 to 5 mph.
Sunday Night
Mostly cloudy, with a low around 53. Calm wind.
Monday
Partly sunny, with a high near 72. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 55. Light south wind.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 69. South wind 5 to 10 mph, with gusts as high as 20 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Tomah WI
 43.92°N 90.52°W
Last Update:
3:31 pm CDT Sep 22, 2026
Forecast Valid:
5pm CDT Sep 22, 2026-6pm CDT Sep 29, 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