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.

Partly Cloudy

38°F

3°C

Humidity 53%
Wind Speed Calm
Barometer 30.24 in (1025.3 mb)
Dewpoint 22°F (-6°C)
Visibility 9.00 mi
Last update 24 Mar 7:55 am CDT
Extended Forecast for

Sparta WI

  • Today

    Today: Mostly cloudy, with a high near 56. Southwest wind 3 to 7 mph.

    High: 56 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 35. Light south wind.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66. Calm wind becoming southwest around 6 mph in the morning.

    High: 66 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 62. Light west wind becoming north 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 62 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 25. North wind 5 to 10 mph, with gusts as high as 22 mph.

    Low: 25 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 44. Calm wind becoming northwest 5 to 7 mph in the morning.

    High: 44 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 23. West wind 3 to 6 mph.

    Low: 23 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 54. Light west wind increasing to 5 to 10 mph in the morning.

    High: 54 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 56. Southwest wind 3 to 7 mph.
Tonight
Partly cloudy, with a low around 35. Light south wind.
Wednesday
Mostly sunny, with a high near 66. Calm wind becoming southwest around 6 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 46. Calm wind.
Thursday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 62. Light west wind becoming north 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 25. North wind 5 to 10 mph, with gusts as high as 22 mph.
Friday
Sunny, with a high near 44. Calm wind becoming northwest 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 23. West wind 3 to 6 mph.
Saturday
Sunny, with a high near 54. Light west wind increasing to 5 to 10 mph in the morning.
Saturday Night
Partly cloudy, with a low around 34. South wind around 5 mph.
Sunday
Mostly sunny, with a high near 60. Southwest wind 5 to 8 mph.
Sunday Night
Partly cloudy, with a low around 37. South wind around 6 mph.
Monday
Mostly sunny, with a high near 67. South wind 5 to 7 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:
7:16 am CDT Mar 24, 2026
Forecast Valid:
8am CDT Mar 24, 2026-6pm CDT Mar 30, 2026
 
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Additional Resources

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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