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

24°F

-4°C

Humidity 56%
Wind Speed Calm
Barometer 30.32 in (1028.5 mb)
Dewpoint 10°F (-12°C)
Visibility 9.00 mi
Last update 28 Feb 6:55 pm CST
Extended Forecast for

Warrens WI

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 4. North wind 3 to 5 mph.

    Low: 4 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 28. Wind chill values as low as -2. Light and variable wind.

    High: 28 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 10. Calm wind becoming southeast around 5 mph after midnight.

    Low: 10 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 40. South wind 5 to 9 mph, with gusts as high as 18 mph.

    High: 40 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A 40 percent chance of snow after midnight. Mostly cloudy, with a low around 27. Light south wind. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Mostly Cloudy
    then Chance
    Snow

  • Tuesday

    Tuesday: A chance of rain and snow before noon, then a slight chance of rain. Mostly cloudy, with a high near 42. Light east wind. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 42 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24. Calm wind.

    Low: 24 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of rain. Mostly sunny, with a high near 45. Calm wind becoming east around 6 mph.

    High: 45 °F

    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain. Partly cloudy, with a low around 31. Light southeast wind.

    Low: 31 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 4. North wind 3 to 5 mph.
Sunday
Sunny, with a high near 28. Wind chill values as low as -2. Light and variable wind.
Sunday Night
Mostly clear, with a low around 10. Calm wind becoming southeast around 5 mph after midnight.
Monday
Increasing clouds, with a high near 40. South wind 5 to 9 mph, with gusts as high as 18 mph.
Monday Night
A 40 percent chance of snow after midnight. Mostly cloudy, with a low around 27. Light south wind. New snow accumulation of less than a half inch possible.
Tuesday
A chance of rain and snow before noon, then a slight chance of rain. Mostly cloudy, with a high near 42. Light east wind. Chance of precipitation is 40%. Little or no snow accumulation expected.
Tuesday Night
Partly cloudy, with a low around 24. Calm wind.
Wednesday
A 20 percent chance of rain. Mostly sunny, with a high near 45. Calm wind becoming east around 6 mph.
Wednesday Night
A 20 percent chance of rain. Partly cloudy, with a low around 31. Light southeast wind.
Thursday
A 20 percent chance of rain. Mostly cloudy, with a high near 50. Southeast wind 3 to 6 mph.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 34. Southeast wind 3 to 6 mph.
Friday
A 50 percent chance of rain. Mostly cloudy, with a high near 54. Southeast wind around 7 mph becoming west in the afternoon.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 31. West wind around 6 mph.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 52. West wind 6 to 8 mph.
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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:
5:46 pm CST Feb 28, 2026
Forecast Valid:
7pm CST Feb 28, 2026-6pm CST Mar 7, 2026
 
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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