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.

Overcast

8°F

-13°C

Humidity 78%
Wind Speed Calm
Barometer 30.21 in (1025.5 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Last update 30 Dec 6:55 am CST
Extended Forecast for

Sparta WI

  • Today

    Today: Snow, mainly after 10am. High near 26. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 100%. Total daytime snow accumulation of around an inch possible.

    High: 26 °F

    Snow

  • Tonight

    Tonight: A chance of snow, possibly mixing with freezing rain after 7pm, then gradually ending. Mostly cloudy, with a low around 16. Northwest wind 5 to 7 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

    Low: 16 °F

    Chance Wintry
    Mix then
    Mostly Cloudy

  • Wednesday

    Wednesday: Snow likely, mainly after noon. Mostly cloudy, with a temperature rising to near 24 by 11am, then falling to around 15 during the remainder of the day. Northwest wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 24 °F⇓

    Snow Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -2. Northwest wind around 6 mph becoming calm in the evening.

    Low: -2 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 16. Light west wind.

    High: 16 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 5. Calm wind.

    Low: 5 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 20. Light northwest wind.

    High: 20 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 5. Calm wind.

    Low: 5 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 24. Calm wind.

    High: 24 °F

    Partly Sunny

Detailed Forecast

Today
Snow, mainly after 10am. High near 26. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 100%. Total daytime snow accumulation of around an inch possible.
Tonight
A chance of snow, possibly mixing with freezing rain after 7pm, then gradually ending. Mostly cloudy, with a low around 16. Northwest wind 5 to 7 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Wednesday
Snow likely, mainly after noon. Mostly cloudy, with a temperature rising to near 24 by 11am, then falling to around 15 during the remainder of the day. Northwest wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday Night
Partly cloudy, with a low around -2. Northwest wind around 6 mph becoming calm in the evening.
New Year's Day
Partly sunny, with a high near 16. Light west wind.
Thursday Night
Mostly cloudy, with a low around 5. Calm wind.
Friday
Mostly sunny, with a high near 20. Light northwest wind.
Friday Night
Mostly cloudy, with a low around 5. Calm wind.
Saturday
Partly sunny, with a high near 24. Calm wind.
Saturday Night
Mostly cloudy, with a low around 14. Calm wind.
Sunday
Mostly cloudy, with a high near 31. Light south wind.
Sunday Night
Mostly cloudy, with a low around 16. Light and variable wind.
Monday
Partly sunny, with a high near 30. West wind 3 to 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta WI
 43.93°N 90.81°W
Last Update:
7:32 am CST Dec 30, 2025
Forecast Valid:
7am CST Dec 30, 2025-6pm CST Jan 5, 2026
 
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Additional Resources

Radar & Satellite Image

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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