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

22°F

-6°C

Humidity 92%
Wind Speed Calm
Barometer 29.89 in (1013.1 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 15 Feb 2:55 am CST
Extended Forecast for

Warrens WI

  • Overnight

    Overnight: Mostly clear, with a low around 24. Light west wind.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 53. Calm wind becoming northwest around 5 mph.

    High: 53 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 36. Calm wind becoming south 5 to 8 mph after midnight. Winds could gust as high as 20 mph.

    Low: 36 °F

    Increasing
    Clouds

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 57. Southwest wind 5 to 8 mph becoming light and variable in the afternoon. Winds could gust as high as 20 mph.

    High: 57 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. Calm wind becoming east 5 to 7 mph after midnight.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 48. Breezy, with an east wind 7 to 16 mph, with gusts as high as 30 mph.

    High: 48 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Tuesday Night

    Tuesday Night: Rain likely, then rain and possibly a thunderstorm after midnight. Low around 38. Breezy, with an east wind 9 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    Low: 38 °F

    Rain and
    Breezy

  • Wednesday

    Wednesday: A 50 percent chance of rain. Mostly sunny, with a high near 51. Southeast wind 9 to 15 mph becoming west in the afternoon. Winds could gust as high as 26 mph.

    High: 51 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain and snow before midnight, then a slight chance of snow. Partly cloudy, with a low around 26. West wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    Low: 26 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

Detailed Forecast

Overnight
Mostly clear, with a low around 24. Light west wind.
Sunday
Sunny, with a high near 53. Calm wind becoming northwest around 5 mph.
Sunday Night
Increasing clouds, with a low around 36. Calm wind becoming south 5 to 8 mph after midnight. Winds could gust as high as 20 mph.
Washington's Birthday
Mostly sunny, with a high near 57. Southwest wind 5 to 8 mph becoming light and variable in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 31. Calm wind becoming east 5 to 7 mph after midnight.
Tuesday
Mostly cloudy, with a high near 48. Breezy, with an east wind 7 to 16 mph, with gusts as high as 30 mph.
Tuesday Night
Rain likely, then rain and possibly a thunderstorm after midnight. Low around 38. Breezy, with an east wind 9 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Wednesday
A 50 percent chance of rain. Mostly sunny, with a high near 51. Southeast wind 9 to 15 mph becoming west in the afternoon. Winds could gust as high as 26 mph.
Wednesday Night
A chance of rain and snow before midnight, then a slight chance of snow. Partly cloudy, with a low around 26. West wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Thursday
A chance of rain and snow after noon. Mostly sunny, with a high near 42. West wind 6 to 9 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 23. North wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 32. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 15. Northwest wind around 7 mph.
Saturday
Partly sunny, with a high near 29. Northwest 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:
1:51 am CST Feb 15, 2026
Forecast Valid:
3am CST Feb 15, 2026-6pm CST Feb 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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