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.

Light Rain

58°F

14°C

Humidity 81%
Wind Speed Calm
Barometer 29.80 in (1009.7 mb)
Dewpoint 53°F (12°C)
Visibility 6.00 mi
Last update 8 Apr 6:55 pm CDT
Extended Forecast for

Sparta WI

  • Tonight

    Tonight: Showers, mainly before 8pm. Low around 33. West wind 5 to 10 mph becoming light southwest. Winds could gust as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 33 °F

    Showers then
    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 56. West wind 5 to 7 mph.

    High: 56 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A 50 percent chance of showers, mainly before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 34. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 56. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 59. Calm wind becoming southeast 5 to 8 mph in the afternoon.

    High: 59 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 47. Southeast wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    Low: 47 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 71. Breezy, with a south wind 9 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.

    High: 71 °F

    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 61. South wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

Tonight
Showers, mainly before 8pm. Low around 33. West wind 5 to 10 mph becoming light southwest. Winds could gust as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Increasing clouds, with a high near 56. West wind 5 to 7 mph.
Thursday Night
A 50 percent chance of showers, mainly before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 34. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Friday
Sunny, with a high near 56. Calm wind becoming northwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 30. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 59. Calm wind becoming southeast 5 to 8 mph in the afternoon.
Saturday Night
Showers and possibly a thunderstorm. Low around 47. Southeast wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Sunday
Showers and possibly a thunderstorm. High near 71. Breezy, with a south wind 9 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.
Sunday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 61. South wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. Southwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. South wind around 8 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 59. West wind 6 to 10 mph becoming north in the afternoon. Chance of precipitation is 60%.
Tuesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 31. North wind around 8 mph. Chance of precipitation is 50%.
Wednesday
A chance of rain and snow showers. Partly sunny, with a high near 47. North wind 7 to 9 mph. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
6:36 pm CDT Apr 8, 2026
Forecast Valid:
7pm CDT Apr 8, 2026-6pm CDT Apr 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

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