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.

Overcast

19°F

-7°C

Humidity 84%
Wind Speed Calm
Barometer 30.22 in (1025.6 mb)
Dewpoint 15°F (-9°C)
Visibility 8.00 mi
Last update 1 Dec 11:55 am CST
Extended Forecast for

2 Miles N Ontario WI

  • This Afternoon

    This Afternoon: Snow. High near 23. Light south wind. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.

    High: 23 °F

    Snow

  • Tonight

    Tonight: A slight chance of snow before 10pm, then scattered flurries between 10pm and 11pm. Mostly cloudy, with a low around 9. Calm wind. Chance of precipitation is 20%.

    Low: 9 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 25. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 25 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Scattered snow showers between midnight and 1am, then a chance of snow after 1am. Mostly cloudy, with a low around 15. South wind around 6 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 15 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: A 40 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 28. West wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Little or no snow accumulation expected.

    High: 28 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around -9. Northwest wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 20 mph.

    Low: -9 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 14. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 14 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 1. Southwest wind around 6 mph.

    Low: 1 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 24. Southwest wind 5 to 7 mph.

    High: 24 °F

    Partly Sunny
    then Slight
    Chance Snow

Detailed Forecast

This Afternoon
Snow. High near 23. Light south wind. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A slight chance of snow before 10pm, then scattered flurries between 10pm and 11pm. Mostly cloudy, with a low around 9. Calm wind. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 25. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
Scattered snow showers between midnight and 1am, then a chance of snow after 1am. Mostly cloudy, with a low around 15. South wind around 6 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Wednesday
A 40 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 28. West wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Little or no snow accumulation expected.
Wednesday Night
Mostly clear, with a low around -9. Northwest wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 14. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 1. Southwest wind around 6 mph.
Friday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 24. Southwest wind 5 to 7 mph.
Friday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 11. Light west wind.
Saturday
A 20 percent chance of snow. Mostly cloudy, with a high near 28. Calm wind becoming southwest around 6 mph in the morning.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 8. Light and variable wind.
Sunday
Partly sunny, with a high near 22. Northwest wind 3 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Ontario WI
 43.75°N 90.58°W
Last Update:
11:51 am CST Dec 1, 2025
Forecast Valid:
12pm CST Dec 1, 2025-6pm CST Dec 7, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation