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.

Mostly Cloudy

74°F

23°C

Humidity 72%
Wind Speed Calm
Barometer 29.77 in (1008.1 mb)
Dewpoint 65°F (18°C)
Visibility 9.00 mi
Last update 18 Jun 1:55 pm CDT
Extended Forecast for

Wilton WI

  • This Afternoon

    This Afternoon: Showers likely before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 76. Light north wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then isolated showers between 2am and 3am. Mostly cloudy, with a low around 60. Light northwest wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers
    Likely then
    Scattered
    Showers

  • Juneteenth

    Juneteenth: Partly sunny, then gradually becoming sunny, with a high near 83. Calm wind becoming west 5 to 8 mph in the morning.

    High: 83 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms, then a chance of showers after 10pm. Partly cloudy, with a low around 63. West wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 85. South wind 6 to 13 mph, with gusts as high as 22 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. South wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    Low: 75 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 93. Breezy, with a southwest wind 14 to 16 mph, with gusts as high as 28 mph.

    High: 93 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Southwest wind around 11 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 95. Breezy, with a southwest wind 11 to 17 mph, with gusts as high as 28 mph.

    High: 95 °F

    Sunny then
    Sunny and
    Breezy

Detailed Forecast

This Afternoon
Showers likely before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 76. Light north wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 2am, then isolated showers between 2am and 3am. Mostly cloudy, with a low around 60. Light northwest wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Juneteenth
Partly sunny, then gradually becoming sunny, with a high near 83. Calm wind becoming west 5 to 8 mph in the morning.
Thursday Night
A slight chance of showers and thunderstorms, then a chance of showers after 10pm. Partly cloudy, with a low around 63. West wind around 5 mph becoming calm. Chance of precipitation is 30%.
Friday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 85. South wind 6 to 13 mph, with gusts as high as 22 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. South wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 93. Breezy, with a southwest wind 14 to 16 mph, with gusts as high as 28 mph.
Saturday Night
Mostly clear, with a low around 77. Southwest wind around 11 mph, with gusts as high as 25 mph.
Sunday
Sunny and hot, with a high near 95. Breezy, with a southwest wind 11 to 17 mph, with gusts as high as 28 mph.
Sunday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 76. South wind 10 to 14 mph, with gusts as high as 26 mph.
Monday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southwest wind around 10 mph, with gusts as high as 20 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southwest wind 5 to 9 mph, with gusts as high as 18 mph.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. West wind 6 to 8 mph. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wilton WI
 43.81°N 90.52°W
Last Update:
1:58 pm CDT Jun 18, 2025
Forecast Valid:
2pm CDT Jun 18, 2025-6pm CDT Jun 24, 2025
 
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Additional Resources

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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