National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

72°F

22°C

Humidity 87%
Wind Speed Calm
Barometer 29.88 in (1012.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 7 Aug 5:55 pm CDT
Extended Forecast for

4 Miles SSE Cashton WI

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 59. South wind 6 to 9 mph becoming northwest after midnight. Winds could gust as high as 18 mph.

    Low: 59 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81. Northwest wind around 6 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers between 2am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 61. Light south wind. Chance of precipitation is 30%.

    Low: 61 °F

    Mostly Clear
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. South wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers after 1am. Partly cloudy, with a low around 63. Light and variable wind.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81. Calm wind. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 59. South wind 6 to 9 mph becoming northwest after midnight. Winds could gust as high as 18 mph.
Saturday
Sunny, with a high near 81. Northwest wind around 6 mph.
Saturday Night
A slight chance of showers between 2am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 61. Light south wind. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. South wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 40 percent chance of showers after 1am. Partly cloudy, with a low around 63. Light and variable wind.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81. Calm wind. Chance of precipitation is 40%.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. Calm wind becoming northwest around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 57. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 78. Calm wind becoming northwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 55. Light and variable wind.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 77. Calm wind becoming south around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Cashton WI
 43.69°N 90.76°W
Last Update:
5:26 pm CDT Aug 7, 2026
Forecast Valid:
6pm CDT Aug 7, 2026-6pm CDT Aug 14, 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