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

Sparta, Sparta / Fort McCoy Airport (KCMY)

Lat: 43.96°NLon: 90.74°WElev: 837ft.

Overcast

6°F

-14°C

Humidity 82%
Wind Speed Calm
Barometer 29.85 in (1013.2 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Last update 26 Feb 7:55 am CST
Extended Forecast for

2 Miles N Ontario WI

  • Today

    Today: Mostly sunny, with a high near 39. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 22 mph.

    High: 39 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 24. South wind 3 to 7 mph.

    Low: 24 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 51. South wind 7 to 15 mph becoming west in the afternoon. Winds could gust as high as 26 mph.

    High: 51 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 17. Northwest wind 6 to 11 mph, with gusts as high as 24 mph.

    Low: 17 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 50 percent chance of snow. Mostly cloudy, with a high near 25. North wind 5 to 7 mph. New snow accumulation of 1 to 2 inches possible.

    High: 25 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 5. Light north wind.

    Low: 5 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 26. Light northeast wind.

    High: 26 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 12. Calm wind.

    Low: 12 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 36. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 36 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 39. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 22 mph.
Tonight
Mostly clear, with a low around 24. South wind 3 to 7 mph.
Friday
Mostly sunny, with a high near 51. South wind 7 to 15 mph becoming west in the afternoon. Winds could gust as high as 26 mph.
Friday Night
Increasing clouds, with a low around 17. Northwest wind 6 to 11 mph, with gusts as high as 24 mph.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 25. North wind 5 to 7 mph. New snow accumulation of 1 to 2 inches possible.
Saturday Night
Mostly clear, with a low around 5. Light north wind.
Sunday
Mostly sunny, with a high near 26. Light northeast wind.
Sunday Night
Mostly cloudy, with a low around 12. Calm wind.
Monday
Partly sunny, with a high near 36. Calm wind becoming southeast 5 to 7 mph in the morning.
Monday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 20. Light south wind.
Tuesday
A 20 percent chance of snow. Mostly cloudy, with a high near 42. South wind 3 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 22. Light west wind.
Wednesday
Mostly sunny, with a high near 45. South wind 3 to 8 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Ontario WI
 43.75°N 90.58°W
Last Update:
8:32 am CST Feb 26, 2026
Forecast Valid:
8am CST Feb 26, 2026-6pm CST Mar 4, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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