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.

Fog/Mist

36°F

2°C

Humidity 98%
Wind Speed Calm
Barometer 29.64 in (1004.9 mb)
Dewpoint 36°F (2°C)
Visibility 1.25 mi
Last update 6 Jan 3:55 pm CST
Extended Forecast for

Warrens WI

  • This Afternoon

    This Afternoon: A 40 percent chance of rain. Patchy fog. Otherwise, cloudy, with a high near 36. West wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 36 °F

    Chance Rain
    and Patchy
    Fog

  • Tonight

    Tonight: A 20 percent chance of rain before 7pm. Patchy fog before 10pm. Areas of freezing fog after 10pm. Otherwise, mostly cloudy, with a low around 24. West wind 3 to 7 mph. Winds could gust as high as 18 mph.

    Low: 24 °F

    Slight Chance
    Rain and
    Areas
    Freezing Fog

  • Wednesday

    Wednesday: Patchy fog between 10am and 11am. Areas of freezing fog before 10am. Otherwise, mostly sunny, with a high near 40. Calm wind becoming south around 6 mph in the morning.

    High: 40 °F

    Areas
    Freezing Fog
    and Patchy
    Fog then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. South wind around 5 mph becoming calm in the evening.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of rain after noon. Mostly cloudy, with a high near 41. Light and variable wind. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 41 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 27. Light and variable wind becoming north around 6 mph in the evening. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 27 °F

    Rain Likely
    then Chance
    Rain

  • Friday

    Friday: A 20 percent chance of rain before noon. Partly sunny, with a high near 37. Northwest wind around 6 mph.

    High: 37 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Friday Night

    Friday Night: A 50 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 22. Northeast wind 3 to 7 mph.

    Low: 22 °F

    Slight Chance
    Snow then
    Chance Snow

  • Saturday

    Saturday: Snow likely, mainly before noon. Mostly cloudy, with a high near 30. Northwest wind 7 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 30 °F

    Snow Likely

Detailed Forecast

This Afternoon
A 40 percent chance of rain. Patchy fog. Otherwise, cloudy, with a high near 36. West wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A 20 percent chance of rain before 7pm. Patchy fog before 10pm. Areas of freezing fog after 10pm. Otherwise, mostly cloudy, with a low around 24. West wind 3 to 7 mph. Winds could gust as high as 18 mph.
Wednesday
Patchy fog between 10am and 11am. Areas of freezing fog before 10am. Otherwise, mostly sunny, with a high near 40. Calm wind becoming south around 6 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 29. South wind around 5 mph becoming calm in the evening.
Thursday
A 50 percent chance of rain after noon. Mostly cloudy, with a high near 41. Light and variable wind. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 27. Light and variable wind becoming north around 6 mph in the evening. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A 20 percent chance of rain before noon. Partly sunny, with a high near 37. Northwest wind around 6 mph.
Friday Night
A 50 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 22. Northeast wind 3 to 7 mph.
Saturday
Snow likely, mainly before noon. Mostly cloudy, with a high near 30. Northwest wind 7 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 15. Northwest wind 8 to 10 mph, with gusts as high as 23 mph.
Sunday
Partly sunny, with a high near 29. West wind around 8 mph.
Sunday Night
Partly cloudy, with a low around 18. Southwest wind around 6 mph.
Monday
Partly sunny, with a high near 38. West wind 6 to 9 mph.
Monday Night
Mostly cloudy, with a low around 24. West wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 35. West wind around 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Warrens WI
 44.14°N 90.51°W
Last Update:
3:16 pm CST Jan 6, 2026
Forecast Valid:
4pm CST Jan 6, 2026-6pm CST Jan 13, 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