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

41°F

5°C

Humidity 55%
Wind Speed NE 13 mph
Barometer 30.03 in (1017.7 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 22 Mar 2:55 pm CDT
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 22. North wind 6 to 11 mph becoming light after midnight.

    Low: 22 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 49. Light and variable wind becoming northwest around 5 mph in the afternoon.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 34. South wind 3 to 8 mph.

    Low: 34 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 56. Southwest wind 6 to 8 mph.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 60. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 60 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. Southeast wind around 5 mph.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 61. Southeast wind 5 to 11 mph becoming northwest in the afternoon.

    High: 61 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 24. North wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 22. North wind 6 to 11 mph becoming light after midnight.
Monday
Sunny, with a high near 49. Light and variable wind becoming northwest around 5 mph in the afternoon.
Monday Night
Increasing clouds, with a low around 34. South wind 3 to 8 mph.
Tuesday
Partly sunny, with a high near 56. Southwest wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 36. Calm wind.
Wednesday
Mostly cloudy, with a high near 60. Calm wind becoming south 5 to 8 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 42. Southeast wind around 5 mph.
Thursday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 61. Southeast wind 5 to 11 mph becoming northwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 24. North wind 6 to 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 43. Northwest wind 5 to 8 mph.
Friday Night
Mostly clear, with a low around 24. Northwest wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 52. West wind 5 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 31. Southwest wind around 7 mph.
Sunday
Sunny, with a high near 59. Southwest wind 5 to 8 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:
1:26 pm CDT Mar 22, 2026
Forecast Valid:
3pm CDT Mar 22, 2026-6pm CDT Mar 29, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation