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

30°F

-1°C

Humidity 87%
Wind Speed Calm
Barometer 30.00 in (1017.3 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 4 Mar 7:55 pm CST
Extended Forecast for

Warrens WI

  • Tonight

    Tonight: Increasing clouds, with a low around 29. Light east wind.

    Low: 29 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 48. East wind 3 to 7 mph.

    High: 48 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 36. Southeast wind around 7 mph.

    Low: 36 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after noon. High near 61. Southeast wind 6 to 9 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 61 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before midnight, then showers likely. Low around 35. South wind 6 to 11 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Showers then
    Showers
    Likely

  • Saturday

    Saturday: A 20 percent chance of showers before noon. Mostly sunny, with a high near 48. Northwest wind 7 to 11 mph, with gusts as high as 22 mph.

    High: 48 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30. Southwest wind 6 to 11 mph, with gusts as high as 24 mph.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. Southwest wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. Southwest wind around 9 mph, with gusts as high as 22 mph.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 29. Light east wind.
Thursday
Mostly cloudy, with a high near 48. East wind 3 to 7 mph.
Thursday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 36. Southeast wind around 7 mph.
Friday
Showers, with thunderstorms also possible after noon. High near 61. Southeast wind 6 to 9 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Low around 35. South wind 6 to 11 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 48. Northwest wind 7 to 11 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 30. Southwest wind 6 to 11 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 60. Southwest wind 10 to 15 mph, with gusts as high as 26 mph.
Sunday Night
Partly cloudy, with a low around 39. Southwest wind around 9 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 67. Southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 36. West wind 7 to 9 mph becoming east after midnight. Winds could gust as high as 20 mph.
Tuesday
Rain and snow showers likely. Mostly cloudy, with a high near 54. East wind 9 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 60%.
Tuesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 21. North wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Wednesday
A 30 percent chance of snow showers. Mostly cloudy, with a high near 35. North wind 10 to 13 mph, with gusts as high as 23 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Warrens WI
 44.12°N 90.51°W
Last Update:
5:26 pm CST Mar 4, 2026
Forecast Valid:
8pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation