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

27°F

-3°C

Humidity 76%
Wind Speed Calm
Barometer 30.13 in (1021.6 mb)
Dewpoint 21°F (-6°C)
Visibility 9.00 mi
Last update 10 Feb 9:55 pm CST
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Clear, with a low around 20. Northwest wind 7 to 9 mph, with gusts as high as 24 mph.

    Low: 20 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 38. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.

    High: 38 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 21. Calm wind.

    Low: 21 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 44. Calm wind.

    High: 44 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 49. Light southwest wind.

    High: 49 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 51. Calm wind becoming south around 5 mph.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 20. Northwest wind 7 to 9 mph, with gusts as high as 24 mph.
Wednesday
Sunny, with a high near 38. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.
Wednesday Night
Increasing clouds, with a low around 21. Calm wind.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 44. Calm wind.
Thursday Night
Partly cloudy, with a low around 26. Calm wind.
Friday
Sunny, with a high near 49. Light southwest wind.
Friday Night
Mostly clear, with a low around 27. Calm wind.
Saturday
Sunny, with a high near 51. Calm wind becoming south around 5 mph.
Saturday Night
Partly cloudy, with a low around 30. Calm wind.
Sunday
Sunny, with a high near 50. Light northwest wind.
Sunday Night
Mostly cloudy, with a low around 30. Calm wind.
Washington's Birthday
Partly sunny, with a high near 51. Calm wind becoming south 5 to 7 mph in the morning.
Monday Night
Mostly cloudy, with a low around 35. Southeast wind around 5 mph.
Tuesday
A 30 percent chance of rain. Mostly cloudy, with a high near 53. Southeast wind 5 to 9 mph, with gusts as high as 20 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
10:22 pm CST Feb 10, 2026
Forecast Valid:
10pm CST Feb 10, 2026-6pm CST Feb 17, 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