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Hazardous Weather Conditions

Current conditions at

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Fair

13°F

-11°C

Humidity 71%
Wind Speed Calm
Barometer 30.09 in (1021.6 mb)
Dewpoint 5°F (-15°C)
Visibility 7.00 mi
Last update 20 Jan 9:55 pm CST
Extended Forecast for

2 Miles N Ontario WI

Extreme Cold Watch January 23, 12:00am until January 24, 12:00pm
Click here for hazard details and duration
Extreme Cold Watch

  • Tonight

    Tonight: Snow, mainly before 3am. Low around 8. Calm wind. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.

    Low: 8 °F

    Snow

  • Wednesday

    Wednesday: Snow, mainly after 3pm. High near 23. Light west wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 23 °F

    Mostly Cloudy
    then Snow

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow before 9pm. Mostly cloudy, with a low around 2. Wind chill values as low as -7. West wind 6 to 13 mph, with gusts as high as 29 mph. New snow accumulation of less than a half inch possible.

    Low: 2 °F

    Chance Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 13. Wind chill values as low as -8. West wind 5 to 13 mph, with gusts as high as 22 mph.

    High: 13 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -18. Northwest wind 7 to 10 mph, with gusts as high as 22 mph.

    Low: -18 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -6. Northwest wind 5 to 9 mph, with gusts as high as 18 mph.

    High: -6 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -18. Light northwest wind.

    Low: -18 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 2. Calm wind.

    High: 2 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -10. Calm wind.

    Low: -10 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow, mainly before 3am. Low around 8. Calm wind. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.
Wednesday
Snow, mainly after 3pm. High near 23. Light west wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Wednesday Night
A 40 percent chance of snow before 9pm. Mostly cloudy, with a low around 2. Wind chill values as low as -7. West wind 6 to 13 mph, with gusts as high as 29 mph. New snow accumulation of less than a half inch possible.
Thursday
Mostly sunny, with a high near 13. Wind chill values as low as -8. West wind 5 to 13 mph, with gusts as high as 22 mph.
Thursday Night
Partly cloudy, with a low around -18. Northwest wind 7 to 10 mph, with gusts as high as 22 mph.
Friday
Mostly sunny and cold, with a high near -6. Northwest wind 5 to 9 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around -18. Light northwest wind.
Saturday
Mostly sunny and cold, with a high near 2. Calm wind.
Saturday Night
Mostly cloudy, with a low around -10. Calm wind.
Sunday
Partly sunny, with a high near 9. Calm wind becoming west around 5 mph.
Sunday Night
Partly cloudy, with a low around -8. Light west wind.
Monday
Mostly sunny, with a high near 14. West wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 1. West wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 21. Calm wind becoming west 5 to 7 mph in the morning.
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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:
10:17 pm CST Jan 20, 2026
Forecast Valid:
10pm CST Jan 20, 2026-6pm CST Jan 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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