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Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Overcast

69°F

21°C

Humidity 82%
Wind Speed Calm
Barometer 29.93 in (1013.4 mb)
Dewpoint 63°F (17°C)
Visibility 8.00 mi
Last update 25 Jul 5:55 am CDT
Extended Forecast for

4 Miles S Sparta / Fort McCoy Airport WI

Extreme Heat Warning July 26, 12:00pm until July 26, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 89. Heat index values as high as 96. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 89 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Increasing clouds, with a low around 70. Calm wind.

    Low: 70 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 105. Calm wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 94 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 72. Southwest wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 72 °F

    Showers
    Likely

  • Monday

    Monday: Mostly sunny, with a high near 93. Light and variable wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 93 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Northwest wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. Light and variable wind.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. Calm wind.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 89. Heat index values as high as 96. Calm wind becoming southwest 5 to 7 mph in the morning.
Tonight
Increasing clouds, with a low around 70. Calm wind.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 105. Calm wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 72. Southwest wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 93. Light and variable wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 67. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 89. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 64. Calm wind.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. Calm wind.
Wednesday Night
Partly cloudy, with a low around 66. Calm wind.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66. Calm wind.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Sparta / Fort McCoy Airport WI
 43.91°N 90.76°W
Last Update:
6:36 am CDT Jul 25, 2026
Forecast Valid:
6am CDT Jul 25, 2026-6pm CDT Jul 31, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation