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.

Light Rain Fog/Mist

44°F

7°C

Humidity 98%
Wind Speed Calm
Barometer 29.82 in (1010.5 mb)
Dewpoint 44°F (7°C)
Visibility 3.00 mi
Last update 24 Nov 11:55 pm CST
Extended Forecast for

2 Miles N Ontario WI

  • Overnight

    Overnight: A 50 percent chance of rain, mainly before 5am. Patchy fog. Otherwise, cloudy, with a low around 41. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Chance Rain
    and Patchy
    Fog

  • Tuesday

    Tuesday: Rain likely, mainly after 5pm. Patchy fog between 3pm and 4pm. Otherwise, cloudy, with a high near 52. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Chance Rain
    and Areas Fog
    then Rain
    Likely and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Rain before midnight, then rain and snow likely between midnight and 1am, then snow likely after 1am. Low around 25. Blustery, with a west wind 9 to 14 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Rain then
    Rain/Snow
    Likely and
    Blustery

  • Wednesday

    Wednesday: A 50 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 33. Windy, with a northwest wind 20 to 26 mph, with gusts as high as 40 mph. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Chance Snow
    and Breezy
    then Slight
    Chance Snow
    and Windy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 19. Blustery, with a northwest wind 11 to 17 mph, with gusts as high as 33 mph.

    Low: 19 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Partly sunny, with a high near 29. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 29 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 14. Northwest wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 21 mph.

    Low: 14 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 29. Light northwest wind.

    High: 29 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 16. Calm wind.

    Low: 16 °F

    Chance Snow

Detailed Forecast

Overnight
A 50 percent chance of rain, mainly before 5am. Patchy fog. Otherwise, cloudy, with a low around 41. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain likely, mainly after 5pm. Patchy fog between 3pm and 4pm. Otherwise, cloudy, with a high near 52. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain before midnight, then rain and snow likely between midnight and 1am, then snow likely after 1am. Low around 25. Blustery, with a west wind 9 to 14 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday
A 50 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 33. Windy, with a northwest wind 20 to 26 mph, with gusts as high as 40 mph. New snow accumulation of less than a half inch possible.
Wednesday Night
Mostly cloudy, with a low around 19. Blustery, with a northwest wind 11 to 17 mph, with gusts as high as 33 mph.
Thanksgiving Day
Partly sunny, with a high near 29. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 14. Northwest wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 21 mph.
Friday
Partly sunny, with a high near 29. Light northwest wind.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 16. Calm wind.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 30. Calm wind becoming southeast around 6 mph.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 17. Calm wind.
Sunday
A 40 percent chance of snow. Mostly cloudy, with a high near 30. Calm wind becoming northwest 5 to 7 mph in the morning.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 14. Light northwest wind.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 29. Northwest wind 3 to 7 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:
11:36 pm CST Nov 24, 2025
Forecast Valid:
12am CST Nov 25, 2025-6pm CST Dec 1, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation