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

29°F

-2°C

Humidity 65%
Wind Speed NW 20 G 31 mph
Barometer 30.09 in (1020.4 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 26 Nov 8:55 pm CST
Extended Forecast for

2 Miles N Ontario WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 19. Blustery, with a northwest wind 13 to 16 mph, with gusts as high as 36 mph.

    Low: 19 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Isolated flurries between 10am and 11am, then scattered snow showers after 11am. Mostly cloudy, with a high near 28. Blustery, with a northwest wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 28 °F

    Scattered
    Snow Showers
    and Blustery

  • Thursday Night

    Thursday Night: A slight chance of snow before 8pm, then a slight chance of flurries between 8pm and midnight. Mostly cloudy, with a low around 15. Northwest wind 5 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 15 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 28. Northwest wind around 6 mph becoming calm in the afternoon.

    High: 28 °F

    Partly Sunny

  • Friday Night

    Friday Night: Snow, mainly after midnight. Low around 15. Light and variable wind. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 15 °F

    Chance Snow
    then Snow

  • Saturday

    Saturday: Snow. The snow could be heavy at times. High near 28. East wind 3 to 8 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    High: 28 °F

    Heavy Snow

  • Saturday Night

    Saturday Night: Snow. Low around 16. Northeast wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%.

    Low: 16 °F

    Snow then
    Snow Likely

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Partly sunny, with a high near 25. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 25 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -2. West wind around 5 mph becoming calm in the evening.

    Low: -2 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 19. Blustery, with a northwest wind 13 to 16 mph, with gusts as high as 36 mph.
Thanksgiving Day
Isolated flurries between 10am and 11am, then scattered snow showers after 11am. Mostly cloudy, with a high near 28. Blustery, with a northwest wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Thursday Night
A slight chance of snow before 8pm, then a slight chance of flurries between 8pm and midnight. Mostly cloudy, with a low around 15. Northwest wind 5 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 28. Northwest wind around 6 mph becoming calm in the afternoon.
Friday Night
Snow, mainly after midnight. Low around 15. Light and variable wind. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Saturday
Snow. The snow could be heavy at times. High near 28. East wind 3 to 8 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Saturday Night
Snow. Low around 16. Northeast wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%.
Sunday
A 20 percent chance of snow before noon. Partly sunny, with a high near 25. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around -2. West wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 18. Light southwest wind.
Monday Night
Mostly cloudy, with a low around -1. Calm wind.
Tuesday
Partly sunny, with a high near 22. Calm wind becoming southwest around 6 mph in the morning.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 9. Light southwest wind.
Wednesday
Mostly cloudy, with a high near 27. Calm wind becoming west 5 to 7 mph in the morning.
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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:
8:26 pm CST Nov 26, 2025
Forecast Valid:
9pm CST Nov 26, 2025-6pm CST Dec 3, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation