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

-3°F

-19°C

Humidity 81%
Wind Speed Calm
Barometer 30.36 in (1030.5 mb)
Dewpoint -7°F (-22°C)
Visibility 10.00 mi
Last update 4 Feb 2:55 am CST
Extended Forecast for

Warrens WI

  • Overnight

    Overnight: Partly cloudy, with a low around 0. Calm wind.

    Low: 0 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 24. Wind chill values as low as -8. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 24 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after 3am. Increasing clouds, with a low around 12. Southwest wind 3 to 7 mph. Winds could gust as high as 21 mph.

    Low: 12 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Thursday

    Thursday: A 30 percent chance of snow, mainly before 8am. Mostly cloudy, with a high near 35. Southwest wind 8 to 10 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 35 °F

    Chance Snow
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: A slight chance of snow and freezing rain between midnight and 3am, then a slight chance of rain, snow, and freezing rain after 3am. Mostly cloudy, with a low around 27. Light west wind becoming northwest 8 to 13 mph in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance Wintry
    Mix

  • Friday

    Friday: Partly sunny, with a high near 37. Northwest wind 10 to 15 mph, with gusts as high as 28 mph.

    High: 37 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 8. North wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 21 mph.

    Low: 8 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 29. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 29 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 18. South wind around 6 mph.

    Low: 18 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 0. Calm wind.
Wednesday
Mostly sunny, with a high near 24. Wind chill values as low as -8. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
A 20 percent chance of snow after 3am. Increasing clouds, with a low around 12. Southwest wind 3 to 7 mph. Winds could gust as high as 21 mph.
Thursday
A 30 percent chance of snow, mainly before 8am. Mostly cloudy, with a high near 35. Southwest wind 8 to 10 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
A slight chance of snow and freezing rain between midnight and 3am, then a slight chance of rain, snow, and freezing rain after 3am. Mostly cloudy, with a low around 27. Light west wind becoming northwest 8 to 13 mph in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 37. Northwest wind 10 to 15 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 8. North wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 21 mph.
Saturday
Mostly sunny, with a high near 29. Calm wind becoming southeast 5 to 7 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 18. South wind around 6 mph.
Sunday
Mostly sunny, with a high near 34. East wind around 6 mph becoming calm in the afternoon.
Sunday Night
Partly cloudy, with a low around 20. Light southwest wind.
Monday
Mostly sunny, with a high near 42. South wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 24. South wind around 5 mph.
Tuesday
A 20 percent chance of rain. Mostly sunny, with a high near 41. South wind 5 to 7 mph becoming northwest in the afternoon.
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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:
3:17 am CST Feb 4, 2026
Forecast Valid:
3am CST Feb 4, 2026-6pm CST Feb 10, 2026
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation