National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Overcast

34°F

1°C

Humidity 91%
Wind Speed E 8 G 17 mph
Barometer 29.77 in (1009.0 mb)
Dewpoint 31°F (-1°C)
Visibility 8.00 mi
Wind Chill27°F (-3°C)
Last update 10 Mar 11:55 pm CDT
Extended Forecast for

2 Miles N Ontario WI

Winter Weather Advisory March 11, 12:42am until March 11, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory March 11, 12:42am until March 11, 01:00pm

    NOW until 1:00pm Wed

    Winter Weather Advisory

  • Overnight

    Low: 35 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Snow showers, mainly before 2pm. High near 40. Northwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Snow Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 23. Northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 23 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of rain showers after 4pm. Increasing clouds, with a high near 45. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    High: 45 °F

    Sunny then
    Slight Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Rain showers before 4am, then snow showers likely. Low around 30. Breezy, with a south wind 10 to 15 mph becoming west 18 to 23 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Showers then
    Rain/Snow and
    Breezy

  • Friday

    Friday: Snow showers likely before 7am. Partly sunny, with a high near 40. Windy, with a northwest wind 21 to 26 mph, with gusts as high as 41 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Snow Showers
    Likely and
    Windy then
    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22. Northwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of snow, mainly after 1pm. Mostly cloudy, with a high near 39. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 39 °F

    Chance Snow

Detailed Forecast

Overnight
A chance of rain and snow showers, mainly after 5am. Mostly cloudy, with a steady temperature around 35. North wind around 8 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Wednesday
Snow showers, mainly before 2pm. High near 40. Northwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday Night
Mostly clear, with a low around 23. Northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Thursday
A slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of rain showers after 4pm. Increasing clouds, with a high near 45. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Thursday Night
Rain showers before 4am, then snow showers likely. Low around 30. Breezy, with a south wind 10 to 15 mph becoming west 18 to 23 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday
Snow showers likely before 7am. Partly sunny, with a high near 40. Windy, with a northwest wind 21 to 26 mph, with gusts as high as 41 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
Mostly cloudy, with a low around 22. Northwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Saturday
A 40 percent chance of snow, mainly after 1pm. Mostly cloudy, with a high near 39. Calm wind becoming southeast around 6 mph in the afternoon.
Saturday Night
Snow likely, possibly mixed with rain before 1am, then snow, possibly mixed with freezing rain. Low around 26. East wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Sunday
Snow before 1pm, then snow likely, possibly mixed with rain. High near 35. Breezy, with a northeast wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 10. Northwest wind around 15 mph, with gusts as high as 29 mph.
Monday
Partly sunny, with a high near 25. Northwest wind 11 to 14 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 3. Northwest wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Tuesday
Mostly sunny, with a high near 30. Calm wind becoming southwest around 6 mph in the afternoon.
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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:
12:01 am CDT Mar 11, 2026
Forecast Valid:
12am CDT Mar 11, 2026-6pm CDT Mar 17, 2026
 
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