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.

Light Unknown Precip Fog/Mist

25°F

-4°C

Humidity 89%
Wind Speed Calm
Barometer 29.43 in (998.0 mb)
Dewpoint 22°F (-6°C)
Visibility 4.00 mi
Last update 16 Jan 1:55 am CST
Extended Forecast for

2 Miles N Ontario WI

  • Overnight

    Overnight: Snow. Steady temperature around 26. West wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 26 °F

    Snow

  • Friday

    Friday: Snow likely, mainly before 8am. Cloudy, with a temperature rising to near 34 by 11am, then falling to around 24 during the remainder of the day. Breezy, with a west wind 8 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    High: 34 °F⇓

    Snow Likely
    and Breezy

  • Friday Night

    Friday Night: A 40 percent chance of snow. Cloudy, with a low around 10. Wind chill values as low as -1. West wind 9 to 14 mph, with gusts as high as 29 mph. Little or no snow accumulation expected.

    Low: 10 °F

    Chance Snow

  • Saturday

    Saturday: A 50 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 17. Wind chill values as low as -4. Northwest wind 9 to 14 mph, with gusts as high as 24 mph. New snow accumulation of less than a half inch possible.

    High: 17 °F

    Chance Snow
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -2. Northwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 24 mph.

    Low: -2 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of snow. Mostly cloudy, with a high near 16. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph. New snow accumulation of less than a half inch possible.

    High: 16 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -5. Northwest wind 9 to 14 mph, with gusts as high as 28 mph.

    Low: -5 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Partly sunny and cold, with a high near 4. Northwest wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 4 °F

    Cold

  • Monday Night

    Monday Night: Partly cloudy, with a low around -5. West wind 3 to 8 mph. Winds could gust as high as 20 mph.

    Low: -5 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow. Steady temperature around 26. West wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 inches possible.
Friday
Snow likely, mainly before 8am. Cloudy, with a temperature rising to near 34 by 11am, then falling to around 24 during the remainder of the day. Breezy, with a west wind 8 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Friday Night
A 40 percent chance of snow. Cloudy, with a low around 10. Wind chill values as low as -1. West wind 9 to 14 mph, with gusts as high as 29 mph. Little or no snow accumulation expected.
Saturday
A 50 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 17. Wind chill values as low as -4. Northwest wind 9 to 14 mph, with gusts as high as 24 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around -2. Northwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 24 mph.
Sunday
A 50 percent chance of snow. Mostly cloudy, with a high near 16. Light west wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly cloudy, with a low around -5. Northwest wind 9 to 14 mph, with gusts as high as 28 mph.
M.L.King Day
Partly sunny and cold, with a high near 4. Northwest wind 10 to 15 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around -5. West wind 3 to 8 mph. Winds could gust as high as 20 mph.
Tuesday
Partly sunny, with a high near 16. Southwest wind 3 to 7 mph.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 7. Southwest wind around 5 mph.
Wednesday
Partly sunny, with a high near 21. West wind 5 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 4. West wind around 6 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 23. Calm wind becoming southwest 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:
2:52 am CST Jan 16, 2026
Forecast Valid:
2am CST Jan 16, 2026-6pm CST Jan 22, 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