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

67°F

19°C

Humidity 80%
Wind Speed Calm
Barometer 30.04 in (1017.4 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 5 Aug 9:55 am CDT
Extended Forecast for

4 Miles ENE Viroqua Municipal Airport WI

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 75. Light west wind.

    High: 75 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Areas of fog before 9am. Otherwise, sunny, with a high near 81. Light south wind.

    High: 81 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Light south wind.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 30%.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 61. Southwest wind 3 to 6 mph.

    Low: 61 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 82 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers, with thunderstorms also possible after 7pm. Partly cloudy, with a low around 62. Light south wind. Chance of precipitation is 50%.

    Low: 62 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 84 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 75. Light west wind.
Tonight
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 54. Calm wind.
Thursday
Areas of fog before 9am. Otherwise, sunny, with a high near 81. Light south wind.
Thursday Night
Mostly clear, with a low around 58. Light south wind.
Friday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 61. Southwest wind 3 to 6 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
A chance of showers, with thunderstorms also possible after 7pm. Partly cloudy, with a low around 62. Light south wind. Chance of precipitation is 50%.
Sunday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. Light and variable wind.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Light and variable wind becoming southwest around 6 mph in the morning.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 80. Light and variable wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Viroqua Municipal Airport WI
 43.58°N 90.83°W
Last Update:
9:01 am CDT Aug 5, 2026
Forecast Valid:
12pm CDT Aug 5, 2026-6pm CDT Aug 11, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation