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

5°F

-15°C

Humidity 85%
Wind Speed Calm
Barometer 30.37 in (1030.5 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Last update 1 Dec 5:55 am CST
Extended Forecast for

4 Miles SW Norwalk WI

  • Today

    Today: A chance of flurries between 9am and 11am, then a chance of snow after 11am. Patchy fog before 9am. Otherwise, cloudy, with a high near 21. Calm wind becoming south around 6 mph. Chance of precipitation is 50%. Total daytime snow accumulation of less than a half inch possible.

    High: 21 °F

    Slight Chance
    Snow and
    Patchy Fog
    then Chance
    Snow

  • Tonight

    Tonight: A slight chance of snow before 9pm, then a chance of flurries between 9pm and 11pm. Mostly cloudy, with a low around 9. Calm wind becoming west around 5 mph. Chance of precipitation is 20%.

    Low: 9 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 24. Wind chill values as low as zero. Southwest wind 3 to 8 mph.

    High: 24 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow after midnight. Mostly cloudy, with a low around 16. South wind 7 to 9 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.

    Low: 16 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 26. West wind 8 to 11 mph becoming northwest in the morning. Winds could gust as high as 21 mph.

    High: 26 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -9. Northwest wind 5 to 10 mph, with gusts as high as 21 mph.

    Low: -9 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 12. Light and variable wind becoming south 5 to 7 mph in the afternoon.

    High: 12 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 1. Southwest wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 1 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 23. Southwest wind 6 to 8 mph, with gusts as high as 18 mph.

    High: 23 °F

    Partly Sunny
    then Slight
    Chance Snow

Detailed Forecast

Today
A chance of flurries between 9am and 11am, then a chance of snow after 11am. Patchy fog before 9am. Otherwise, cloudy, with a high near 21. Calm wind becoming south around 6 mph. Chance of precipitation is 50%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A slight chance of snow before 9pm, then a chance of flurries between 9pm and 11pm. Mostly cloudy, with a low around 9. Calm wind becoming west around 5 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 24. Wind chill values as low as zero. Southwest wind 3 to 8 mph.
Tuesday Night
A 40 percent chance of snow after midnight. Mostly cloudy, with a low around 16. South wind 7 to 9 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.
Wednesday
A 30 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 26. West wind 8 to 11 mph becoming northwest in the morning. Winds could gust as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around -9. Northwest wind 5 to 10 mph, with gusts as high as 21 mph.
Thursday
Sunny, with a high near 12. Light and variable wind becoming south 5 to 7 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 1. Southwest wind 7 to 9 mph, with gusts as high as 18 mph.
Friday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 23. Southwest wind 6 to 8 mph, with gusts as high as 18 mph.
Friday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 13. West wind around 6 mph.
Saturday
A 20 percent chance of snow. Mostly cloudy, with a high near 27. West wind around 7 mph becoming south in the afternoon.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 9. Southeast wind around 6 mph becoming northwest after midnight.
Sunday
Partly sunny, with a high near 20. Northwest wind 6 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Norwalk WI
 43.8°N 90.7°W
Last Update:
4:56 am CST Dec 1, 2025
Forecast Valid:
5am CST Dec 1, 2025-6pm CST Dec 7, 2025
 
Forecast Discussion
 
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Additional Resources

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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