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

44°F

7°C

Humidity 97%
Wind Speed Calm
Barometer 30.37 in (1029.1 mb)
Dewpoint 43°F (6°C)
Visibility 9.00 mi
Last update 22 Sep 10:55 pm CDT
Extended Forecast for

4 Miles SSW Sparta WI

  • Tonight

    Tonight: Mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65. Calm wind becoming east around 6 mph in the morning.

    High: 65 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 45. Calm wind.

    Low: 45 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 67. Light southeast wind.

    High: 67 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 68. Light and variable wind.

    High: 68 °F

    Partly Sunny

  • Friday Night

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

    Low: 48 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 65. Southeast wind 3 to 8 mph.

    High: 65 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers. Cloudy, with a low around 51. Southeast wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 43. Calm wind.
Wednesday
Sunny, with a high near 65. Calm wind becoming east around 6 mph in the morning.
Wednesday Night
Increasing clouds, with a low around 45. Calm wind.
Thursday
Partly sunny, with a high near 67. Light southeast wind.
Thursday Night
Mostly cloudy, with a low around 49. Calm wind.
Friday
Partly sunny, with a high near 68. Light and variable wind.
Friday Night
Mostly cloudy, with a low around 48. Calm wind.
Saturday
A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 65. Southeast wind 3 to 8 mph.
Saturday Night
A 50 percent chance of showers. Cloudy, with a low around 51. Southeast wind around 5 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 69. Light south wind.
Sunday Night
Mostly cloudy, with a low around 53. Calm wind.
Monday
Partly sunny, with a high near 73. Light and variable wind.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 55. Calm wind.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 70. Light south wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Sparta WI
 43.89°N 90.85°W
Last Update:
6:36 pm CDT Sep 22, 2026
Forecast Valid:
11pm CDT Sep 22, 2026-6pm CDT Sep 29, 2026
 
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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