BLIZZARD CONDITIONS Tonight Into Monday Morning

Blizzard conditions will develop across much of the area tonight, especially in rural wind-prone areas. This new snow will be lighter and fluffier, making it much more susceptible to blowing around in the strong winds. TRAVEL STRONGLY DISCOURAGED tonight! The Monday morning commute will be impacted. Sporadic power outages will be possible. Read More >

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Unknown Precip Fog/Mist

27°F

-3°C

Humidity 87%
Wind Speed N 14 G 22 mph
Barometer 29.64 in (1005.1 mb)
Dewpoint 23°F (-5°C)
Visibility 1.13 mi
Wind Chill16°F (-9°C)
Last update 15 Mar 11:55 pm CDT
Extended Forecast for

Ontario WI

Blizzard Warning March 16, 12:57am until March 16, 01:00pm
Click here for hazard details and duration
Blizzard Warning
  •  
    Blizzard Warning March 16, 12:57am until March 16, 01:00pm

    NOW until 1:00pm Mon

    Blizzard Warning

  • Overnight

    Low: 15 °F

    Heavy Snow
    and Blowing
    Snow

  • Monday

    Monday: Snow, mainly before 11am, then a chance of flurries after 1pm.  Areas of blowing snow. High near 22. Wind chill values as low as -4. Blustery, with a northwest wind 22 to 24 mph, with gusts as high as 44 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 22 °F

    Snow and
    Areas Blowing
    Snow

  • Monday Night

    Monday Night: Cloudy during the early evening, then gradual clearing, with a low around -2. Wind chill values as low as -12. Blustery, with a northwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 31 mph.

    Low: -2 °F

    Decreasing
    Clouds and
    Blustery then
    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 22. Wind chill values as low as -11. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 22 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Snow, mainly before 1am.  Low around 15. South wind 5 to 7 mph, with gusts as high as 18 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 15 °F

    Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 46. South wind around 6 mph.

    High: 46 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 4am, then a slight chance of freezing rain.  Mostly cloudy, with a low around 29. Calm wind.  Chance of precipitation is 20%.

    Low: 29 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Freezing
    Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 49. Light west wind.

    High: 49 °F

    Mostly Sunny

Detailed Forecast

Overnight
Snow. The snow could be heavy at times. Widespread blowing snow. Low around 15. Windy, with a north wind 18 to 26 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 5 to 9 inches possible.
Monday
Snow, mainly before 11am, then a chance of flurries after 1pm. Areas of blowing snow. High near 22. Wind chill values as low as -4. Blustery, with a northwest wind 22 to 24 mph, with gusts as high as 44 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Monday Night
Cloudy during the early evening, then gradual clearing, with a low around -2. Wind chill values as low as -12. Blustery, with a northwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 31 mph.
Tuesday
Increasing clouds, with a high near 22. Wind chill values as low as -11. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Snow, mainly before 1am. Low around 15. South wind 5 to 7 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Wednesday
Partly sunny, with a high near 46. South wind around 6 mph.
Wednesday Night
A slight chance of rain before 4am, then a slight chance of freezing rain. Mostly cloudy, with a low around 29. Calm wind. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 49. Light west wind.
Thursday Night
Mostly cloudy, with a low around 31. Light southwest wind.
Friday
Mostly cloudy, with a high near 53. Southwest wind 5 to 7 mph.
Friday Night
Mostly cloudy, with a low around 32. South wind around 6 mph becoming light and variable after midnight.
Saturday
Mostly sunny, with a high near 54. Northwest wind 5 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 30. North wind around 6 mph.
Sunday
Partly sunny, with a high near 50. Northwest wind 6 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario WI
 43.73°N 90.58°W
12:16 am CDT Mar 16, 2026
12am CDT Mar 16, 2026-6pm CDT Mar 22, 2026
 
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Additional Resources

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