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

70°F

21°C

Humidity 95%
Wind Speed Calm
Barometer 29.91 in (1012.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 11 Aug 3:55 am CDT
Extended Forecast for

Warrens WI

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a steady temperature around 65. Calm wind.

    Low: 65 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 1pm. Partly sunny, with a high near 84. Calm wind. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 62. Calm wind.

    Low: 62 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A slight chance of thunderstorms after 5pm. Cloudy through mid morning, then gradual clearing, with a high near 86. Light and variable wind. Chance of precipitation is 10%.

    High: 86 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 61. Calm wind. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57. Light east wind.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79. East wind 5 to 7 mph.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Southeast wind around 7 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a steady temperature around 65. Calm wind.
Tuesday
A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 1pm. Partly sunny, with a high near 84. Calm wind. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Increasing clouds, with a low around 62. Calm wind.
Wednesday
A slight chance of thunderstorms after 5pm. Cloudy through mid morning, then gradual clearing, with a high near 86. Light and variable wind. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 61. Calm wind. Chance of precipitation is 20%.
Thursday
Partly sunny, with a high near 82. Light and variable wind.
Thursday Night
Partly cloudy, with a low around 57. Light east wind.
Friday
Mostly sunny, with a high near 79. East wind 5 to 7 mph.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Southeast wind around 7 mph, with gusts as high as 18 mph.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 75. Southeast wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 59. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%.
Sunday
A 20 percent chance of showers. Mostly cloudy, with a high near 78. Calm wind becoming northwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 56. Light north wind.
Monday
Mostly sunny, with a high near 78. Light and variable wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Warrens WI
 44.14°N 90.51°W
Last Update:
3:26 am CDT Aug 11, 2026
Forecast Valid:
4am CDT Aug 11, 2026-6pm CDT Aug 17, 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