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Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Mostly Cloudy

67°F

19°C

Humidity 97%
Wind Speed Calm
Barometer 29.88 in (1011.7 mb)
Dewpoint 66°F (19°C)
Visibility 8.00 mi
Last update 26 Jul 4:55 am CDT
Extended Forecast for

6 Miles E Viroqua WI

Extreme Heat Warning July 26, 12:00pm until July 27, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Overnight

    Overnight: A 20 percent chance of showers. Cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 94. Heat index values as high as 107. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 94 °F

    Gradual
    Clearing

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm in the evening. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 9am. Partly sunny, then gradually becoming sunny and hot, with a high near 95. Heat index values as high as 107. Light and variable wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 95 °F

    Slight Chance
    T-storms then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66. Northwest wind 5 to 8 mph becoming calm after midnight.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89. Light north wind.

    High: 89 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Calm wind.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of showers. Cloudy, with a low around 70. Calm wind.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 94. Heat index values as high as 107. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Sunday Night
A 40 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm in the evening. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 20 percent chance of showers and thunderstorms before 9am. Partly sunny, then gradually becoming sunny and hot, with a high near 95. Heat index values as high as 107. Light and variable wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 66. Northwest wind 5 to 8 mph becoming calm after midnight.
Tuesday
Mostly sunny, with a high near 89. Light north wind.
Tuesday Night
Mostly clear, with a low around 63. Calm wind.
Wednesday
Sunny, with a high near 89. Calm wind.
Wednesday Night
Mostly clear, with a low around 63. Calm wind.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Light south wind.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Light and variable wind.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64. Calm wind.
Saturday
Mostly sunny, with a high near 87. Light north wind.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles E Viroqua WI
 43.56°N 90.77°W
Last Update:
4:46 am CDT Jul 26, 2026
Forecast Valid:
5am CDT Jul 26, 2026-6pm CDT Aug 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation