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.

A Few Clouds

84°F

29°C

Humidity 83%
Wind Speed Calm
Barometer 29.81 in (1009.0 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 30 Jun 9:55 pm CDT
Extended Forecast for

Cashton WI

Heat Advisory July 1, 01:00pm until July 1, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 5am. Mostly cloudy, with a low around 73. Southwest wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms, mainly before 11am. High near 88. South wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    T-storms then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms. Low around 70. Southwest wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 70 °F

    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 88. Southwest wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 68. South wind 3 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Chance
    T-storms then
    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Southwest wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 67. Southwest wind 3 to 6 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely

  • Independence Day

    Independence Day: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. South wind around 7 mph becoming east in the morning.

    High: 83 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. East wind 3 to 5 mph. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly after 5am. Mostly cloudy, with a low around 73. Southwest wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and thunderstorms, mainly before 11am. High near 88. South wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms. Low around 70. Southwest wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 88. Southwest wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 68. South wind 3 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Southwest wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 67. Southwest wind 3 to 6 mph. Chance of precipitation is 60%.
Independence Day
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. South wind around 7 mph becoming east in the morning.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. East wind 3 to 5 mph. Chance of precipitation is 60%.
Sunday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. East wind 3 to 5 mph. Chance of precipitation is 20%.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 63. Calm wind.
Monday
Mostly sunny, with a high near 84. Calm wind.
Monday Night
Partly cloudy, with a low around 64. Calm wind.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 85. Light southwest wind.
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ABOUT THIS FORECAST

 
Point Forecast:
Cashton WI
 43.73°N 90.79°W
Last Update:
9:27 pm CDT Jun 30, 2026
Forecast Valid:
10pm CDT Jun 30, 2026-6pm CDT Jul 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation