National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

48°F

9°C

Humidity 77%
Wind Speed Calm
Barometer 29.94 in (1014.8 mb)
Dewpoint 41°F (5°C)
Visibility 9.00 mi
Last update 5 Mar 5:55 pm CST
Extended Forecast for

4 Miles SSW Sparta WI

  • Tonight

    Tonight: Cloudy, with a low around 40. Southeast wind around 8 mph.

    Low: 40 °F

    Cloudy

  • Friday

    Friday: Showers and possibly a thunderstorm, mainly before 2pm, then a chance of showers and thunderstorms after 2pm. High near 63. Southeast wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 63 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 3am, then showers likely. Low around 39. South wind 7 to 13 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 39 °F

    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before noon. Partly sunny, with a high near 42. West wind 5 to 14 mph, with gusts as high as 25 mph.

    High: 42 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30. Calm wind becoming southwest 5 to 9 mph in the evening. Winds could gust as high as 22 mph.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 62. Southwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. Southwest wind 9 to 13 mph, with gusts as high as 25 mph.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 64. Southwest wind 6 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 64 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. Northwest wind 5 to 8 mph becoming southeast after midnight.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 40. Southeast wind around 8 mph.
Friday
Showers and possibly a thunderstorm, mainly before 2pm, then a chance of showers and thunderstorms after 2pm. High near 63. Southeast wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm before 3am, then showers likely. Low around 39. South wind 7 to 13 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A 20 percent chance of showers before noon. Partly sunny, with a high near 42. West wind 5 to 14 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 30. Calm wind becoming southwest 5 to 9 mph in the evening. Winds could gust as high as 22 mph.
Sunday
Sunny, with a high near 62. Southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 45. Southwest wind 9 to 13 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 64. Southwest wind 6 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.
Monday Night
Partly cloudy, with a low around 39. Northwest wind 5 to 8 mph becoming southeast after midnight.
Tuesday
A 40 percent chance of showers, mainly after noon. Mostly sunny, with a high near 62. Southeast wind 8 to 11 mph becoming west in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 32. Northwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Wednesday
A chance of rain and snow showers. Partly sunny, with a high near 46. Northwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 23. Northwest wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 21 mph.
Thursday
Mostly sunny, with a high near 47. South wind 6 to 13 mph, with gusts as high as 22 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Sparta WI
 43.89°N 90.82°W
Last Update:
5:26 pm CST Mar 5, 2026
Forecast Valid:
6pm CST Mar 5, 2026-6pm CDT Mar 12, 2026
 
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Additional Resources

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Chance of Precipitation