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.

Overcast

63°F

17°C

Humidity 36%
Wind Speed E 10 mph
Barometer 30.06 in (1018.4 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 22 May 2:55 pm CDT
Extended Forecast for

5 Miles NW Sparta WI

  • This Afternoon

    This Afternoon: A 20 percent chance of showers before 4pm. Cloudy, with a high near 70. Breezy, with a southeast wind around 17 mph, with gusts as high as 26 mph.

    High: 70 °F

    Slight Chance
    Showers and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 51. East wind 10 to 14 mph, with gusts as high as 28 mph.

    Low: 51 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 74. Southeast wind 6 to 9 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Partly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight. Mostly cloudy, with a low around 49. Southeast wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. West wind 3 to 7 mph.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 53. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 53 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Memorial Day

    Memorial Day: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. Light south wind.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 88 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers before 4pm. Cloudy, with a high near 70. Breezy, with a southeast wind around 17 mph, with gusts as high as 26 mph.
Tonight
Mostly cloudy, with a low around 51. East wind 10 to 14 mph, with gusts as high as 28 mph.
Saturday
A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 74. Southeast wind 6 to 9 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight. Mostly cloudy, with a low around 49. Southeast wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80. West wind 3 to 7 mph.
Sunday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 53. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Memorial Day
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 8 mph in the morning.
Monday Night
Mostly clear, with a low around 59. Light south wind.
Tuesday
Sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 59. Calm wind.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Calm wind becoming east 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 58. East wind around 6 mph.
Thursday
Mostly sunny, with a high near 83. East wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 57. East wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 83. East wind 3 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Sparta WI
 43.99°N 90.87°W
Last Update:
1:26 pm CDT May 22, 2026
Forecast Valid:
3pm CDT May 22, 2026-6pm CDT May 29, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation