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

62°F

17°C

Humidity 92%
Wind Speed Calm
Barometer 30.03 in (1017.2 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 5 Aug 8:55 pm CDT
Extended Forecast for

4 Miles ENE Viroqua WI

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, mostly clear, 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 80. Light and variable wind.

    High: 80 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Calm 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. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    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 60. West wind 3 to 7 mph.

    Low: 60 °F

    Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 81. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. Southwest wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, mostly clear, with a low around 54. Calm wind.
Thursday
Areas of fog before 9am. Otherwise, sunny, with a high near 80. Light and variable wind.
Thursday Night
Mostly clear, with a low around 58. Calm 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. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 60. West wind 3 to 7 mph.
Saturday
Sunny, with a high near 81. Calm wind becoming southwest around 6 mph in the afternoon.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. Southwest wind around 5 mph becoming calm in the evening.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. Calm wind.
Monday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 82. Light and variable wind becoming southwest around 6 mph in the morning.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61. Light and variable wind.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 80. Light and variable wind.
Tuesday Night
Partly cloudy, with a low around 59. Calm wind.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 79. Light west wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Viroqua WI
 43.58°N 90.83°W
Last Update:
5:31 pm CDT Aug 5, 2026
Forecast Valid:
9pm CDT Aug 5, 2026-6pm CDT Aug 12, 2026
 
Forecast Discussion
 
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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