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 77%
Wind Speed Calm
Barometer 30.08 in (1020.2 mb)
Dewpoint 16°F (-9°C)
Visibility 9.00 mi
Last update 9 Feb 7:55 am CST
Extended Forecast for

2 Miles N Ontario WI

  • Today

    Today: Mostly cloudy, with a high near 40. South wind 5 to 9 mph, with gusts as high as 18 mph.

    High: 40 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 29. Light and variable wind becoming northwest 5 to 9 mph after midnight. Winds could gust as high as 21 mph.

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 38. Breezy, with a northwest wind 11 to 16 mph, with gusts as high as 28 mph.

    High: 38 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 20. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.

    Low: 20 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 37. Northwest wind around 6 mph becoming calm in the afternoon.

    High: 37 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 20. Calm wind.

    Low: 20 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 39. Light southeast wind.

    High: 39 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Slight Chance
    Snow

  • Friday

    Friday: Mostly sunny, with a high near 42. Calm wind becoming south around 5 mph.

    High: 42 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 40. South wind 5 to 9 mph, with gusts as high as 18 mph.
Tonight
Mostly cloudy, with a low around 29. Light and variable wind becoming northwest 5 to 9 mph after midnight. Winds could gust as high as 21 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 38. Breezy, with a northwest wind 11 to 16 mph, with gusts as high as 28 mph.
Tuesday Night
Partly cloudy, with a low around 20. Northwest wind 3 to 8 mph. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 37. Northwest wind around 6 mph becoming calm in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 20. Calm wind.
Thursday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 39. Light southeast wind.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 21. Calm wind.
Friday
Mostly sunny, with a high near 42. Calm wind becoming south around 5 mph.
Friday Night
Partly cloudy, with a low around 24. Calm wind.
Saturday
A 20 percent chance of snow. Mostly sunny, with a high near 42. Calm wind becoming south 5 to 7 mph in the morning.
Saturday Night
A 20 percent chance of snow. Partly cloudy, with a low around 24. Light southeast wind.
Sunday
Mostly sunny, with a high near 44. Calm wind becoming south around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Ontario WI
 43.75°N 90.58°W
Last Update:
7:58 am CST Feb 9, 2026
Forecast Valid:
8am CST Feb 9, 2026-6pm CST Feb 15, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation