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.

Fog/Mist

59°F

15°C

Humidity 93%
Wind Speed Calm
Barometer 29.33 in (993.5 mb)
Dewpoint 57°F (14°C)
Visibility 4.00 mi
Last update 17 Jun 2:55 pm CDT
Extended Forecast for

4 Miles NNE Sparta / Fort McCoy Airport WI

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. High near 65. South wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 11pm, then a slight chance of showers between 11pm and midnight. Low around 51. West wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly cloudy, then gradually becoming sunny, with a high near 73. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 73 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 47. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 47 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Juneteenth

    Juneteenth: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Sunny, with a high near 75. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 75 °F

    Sunny then
    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 77. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers. Partly sunny, with a high near 74. Calm wind becoming east 5 to 7 mph in the afternoon.

    High: 74 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 65. South wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 11pm, then a slight chance of showers between 11pm and midnight. Low around 51. West wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly cloudy, then gradually becoming sunny, with a high near 73. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 47. Northwest wind 5 to 7 mph becoming calm in the evening.
Juneteenth
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Sunny, with a high near 75. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 51. Calm wind.
Saturday
Sunny, with a high near 77. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 52. Calm wind.
Sunday
A 50 percent chance of showers. Partly sunny, with a high near 74. Calm wind becoming east 5 to 7 mph in the afternoon.
Sunday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 51. Northeast wind 5 to 7 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 77. Calm wind becoming north around 5 mph.
Monday Night
Partly cloudy, with a low around 51. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79. Calm wind.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 54. Calm wind.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79. Calm wind becoming west around 6 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Sparta / Fort McCoy Airport WI
 44.01°N 90.72°W
Last Update:
2:06 pm CDT Jun 17, 2026
Forecast Valid:
3pm CDT Jun 17, 2026-6pm CDT Jun 24, 2026
 
Forecast Discussion
 
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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