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.

Fair

72°F

22°C

Humidity 97%
Wind Speed Calm
Barometer 29.90 in (1012.3 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 1 Sep 10:55 pm CDT
Extended Forecast for

Warrens WI

  • Tonight

    Tonight: Showers and thunderstorms. Low around 67. Calm wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms, mainly before 8am. High near 85. Light and variable wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    T-storms then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 4am. Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms after 4pm. Cloudy, then gradual clearing during the afternoon, with a high near 84. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 67. Light southeast wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Partly sunny, with a high near 86. Southeast wind 3 to 5 mph. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66. Light east wind.

    Low: 66 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 85. Light east wind.

    High: 85 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. Light southeast wind.

    Low: 65 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

Tonight
Showers and thunderstorms. Low around 67. Calm wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers and thunderstorms, mainly before 8am. High near 85. Light and variable wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 4am. Mostly clear, with a low around 66. Calm wind.
Thursday
A chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms after 4pm. Cloudy, then gradual clearing during the afternoon, with a high near 84. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 67. Light southeast wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Partly sunny, with a high near 86. Southeast wind 3 to 5 mph. Chance of precipitation is 30%.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66. Light east wind.
Saturday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 85. Light east wind.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65. Light southeast wind.
Sunday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 82. Calm wind becoming south around 5 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Light south wind.
Labor Day
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Southeast wind 3 to 7 mph.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Southeast wind around 6 mph.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 78. Southeast wind 7 to 10 mph, with gusts as high as 21 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Warrens WI
 44.12°N 90.54°W
Last Update:
11:06 pm CDT Sep 1, 2026
Forecast Valid:
11pm CDT Sep 1, 2026-6pm CDT Sep 8, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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