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.

Fair

1°F

-17°C

Humidity 85%
Wind Speed Calm
Barometer 30.01 in (1018.6 mb)
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Last update 15 Jan 6:55 am CST
Extended Forecast for

2 Miles N Ontario WI

  • Today

    Today: Snow, mainly after 3pm. High near 25. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.

    High: 25 °F

    Slight Chance
    Snow then
    Snow

  • Tonight

    Tonight: Snow and freezing rain likely, becoming all snow after 2am. Cloudy, with a temperature rising to around 29 by 4am. Southwest wind 8 to 11 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of 1 to 2 inches possible.

    Low: 22 °F⇑

    Wintry Mix
    Likely then
    Snow Likely

  • Friday

    Friday: Snow likely. Mostly cloudy, with a temperature rising to near 33 by 10am, then falling to around 24 during the remainder of the day. Breezy, with a west wind 10 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 33 °F⇓

    Snow Likely
    and Breezy

  • Friday Night

    Friday Night: A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 8. Wind chill values as low as -4. Northwest wind 8 to 15 mph, with gusts as high as 29 mph.

    Low: 8 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: A 50 percent chance of snow. Mostly cloudy, with a high near 17. Northwest wind 9 to 13 mph, with gusts as high as 23 mph. New snow accumulation of less than one inch possible.

    High: 17 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -1. Northwest wind 5 to 10 mph, with gusts as high as 23 mph.

    Low: -1 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of snow after noon. Partly sunny, with a high near 14. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 14 °F

    Partly Sunny
    then Chance
    Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -2. Northwest wind 8 to 11 mph, with gusts as high as 24 mph.

    Low: -2 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Partly sunny, with a high near 6. Northwest wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 6 °F

    Partly Sunny

Detailed Forecast

Today
Snow, mainly after 3pm. High near 25. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow and freezing rain likely, becoming all snow after 2am. Cloudy, with a temperature rising to around 29 by 4am. Southwest wind 8 to 11 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of 1 to 2 inches possible.
Friday
Snow likely. Mostly cloudy, with a temperature rising to near 33 by 10am, then falling to around 24 during the remainder of the day. Breezy, with a west wind 10 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Friday Night
A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 8. Wind chill values as low as -4. Northwest wind 8 to 15 mph, with gusts as high as 29 mph.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 17. Northwest wind 9 to 13 mph, with gusts as high as 23 mph. New snow accumulation of less than one inch possible.
Saturday Night
Mostly cloudy, with a low around -1. Northwest wind 5 to 10 mph, with gusts as high as 23 mph.
Sunday
A 30 percent chance of snow after noon. Partly sunny, with a high near 14. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around -2. Northwest wind 8 to 11 mph, with gusts as high as 24 mph.
M.L.King Day
Partly sunny, with a high near 6. Northwest wind 10 to 14 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around -5. West wind 3 to 8 mph. Winds could gust as high as 21 mph.
Tuesday
Mostly sunny, with a high near 14. West wind 3 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 3. Southwest wind 3 to 5 mph.
Wednesday
Partly sunny, with a high near 21. West wind 5 to 9 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:
4:26 am CST Jan 15, 2026
Forecast Valid:
7am CST Jan 15, 2026-6pm CST Jan 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation