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

-18°F

-28°C

Humidity 74%
Wind Speed Calm
Barometer 30.31 in (1029.7 mb)
Dewpoint -24°F (-31°C)
Visibility 9.00 mi
Last update 29 Jan 3:55 am CST
Extended Forecast for

Warrens WI

  • Today

    Today: Sunny, with a high near 11. Wind chill values as low as -5. Calm wind becoming northwest around 5 mph.

    High: 11 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around -6. Light north wind.

    Low: -6 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 13. Wind chill values as low as -16. Light north wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 13 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around -2. Wind chill values as low as -10. Northwest wind 3 to 6 mph.

    Low: -2 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 21. Light northwest wind.

    High: 21 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 1. Calm wind becoming south around 5 mph after midnight.

    Low: 1 °F

    Partly Cloudy

  • Sunday

    Sunday: A 50 percent chance of snow, mainly after noon. Partly sunny, with a high near 25. Southwest wind 5 to 8 mph.

    High: 25 °F

    Slight Chance
    Snow then
    Chance Snow

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 14. Light and variable wind becoming northwest around 5 mph after midnight.

    Low: 14 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 28. Northwest wind 3 to 7 mph.

    High: 28 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 11. Wind chill values as low as -5. Calm wind becoming northwest around 5 mph.
Tonight
Partly cloudy, with a low around -6. Light north wind.
Friday
Mostly sunny, with a high near 13. Wind chill values as low as -16. Light north wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 18 mph.
Friday Night
Mostly clear, with a low around -2. Wind chill values as low as -10. Northwest wind 3 to 6 mph.
Saturday
Sunny, with a high near 21. Light northwest wind.
Saturday Night
Partly cloudy, with a low around 1. Calm wind becoming south around 5 mph after midnight.
Sunday
A 50 percent chance of snow, mainly after noon. Partly sunny, with a high near 25. Southwest wind 5 to 8 mph.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 14. Light and variable wind becoming northwest around 5 mph after midnight.
Monday
Partly sunny, with a high near 28. Northwest wind 3 to 7 mph.
Monday Night
Mostly cloudy, with a low around 7. Calm wind.
Tuesday
A 20 percent chance of snow. Partly sunny, with a high near 25. Calm wind becoming northeast around 5 mph.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 9. Light and variable wind.
Wednesday
A 30 percent chance of snow. Partly sunny, with a high near 26. Calm wind becoming west around 6 mph in the morning.
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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:
3:16 am CST Jan 29, 2026
Forecast Valid:
4am CST Jan 29, 2026-6pm CST Feb 4, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation