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.

Overcast with Haze

12°F

-11°C

Humidity 80%
Wind Speed W 6 mph
Barometer 29.82 in (1011.6 mb)
Dewpoint 7°F (-14°C)
Visibility 2.50 mi
Wind Chill2°F (-17°C)
Last update 17 Jan 6:55 am CST
Extended Forecast for

2 Miles N Ontario WI

  • Today

    Today: Snow likely, mainly before 1pm. Mostly cloudy, with a high near 21. Northwest wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

    High: 21 °F

    Snow Likely
    then Chance
    Snow

  • Tonight

    Tonight: Mostly cloudy, with a low around 1. Wind chill values as low as -9. Northwest wind 6 to 11 mph becoming southwest after midnight. Winds could gust as high as 24 mph.

    Low: 1 °F

    Mostly Cloudy

  • Sunday

    Sunday: Snow. High near 17. Wind chill values as low as -6. Southwest wind 5 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    High: 17 °F

    Snow Likely
    then Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -5. Wind chill values as low as -23. Blustery, with a northwest wind 14 to 17 mph, with gusts as high as 31 mph.

    Low: -5 °F

    Mostly Cloudy
    and Blustery

  • M.L.King Day

    M.L.King Day: Partly sunny and cold, with a high near 4. West wind 10 to 14 mph, with gusts as high as 28 mph.

    High: 4 °F

    Cold

  • Monday Night

    Monday Night: Partly cloudy, with a low around -4. West wind 3 to 8 mph. Winds could gust as high as 20 mph.

    Low: -4 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 17. Southwest wind 3 to 6 mph.

    High: 17 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 10. Calm wind becoming west around 5 mph after midnight.

    Low: 10 °F

    Chance Snow

  • Wednesday

    Wednesday: A 20 percent chance of snow before noon. Partly sunny, with a high near 20. West wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 20 °F

    Slight Chance
    Snow then
    Partly Sunny

Detailed Forecast

Today
Snow likely, mainly before 1pm. Mostly cloudy, with a high near 21. Northwest wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Mostly cloudy, with a low around 1. Wind chill values as low as -9. Northwest wind 6 to 11 mph becoming southwest after midnight. Winds could gust as high as 24 mph.
Sunday
Snow. High near 17. Wind chill values as low as -6. Southwest wind 5 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Sunday Night
Mostly cloudy, with a low around -5. Wind chill values as low as -23. Blustery, with a northwest wind 14 to 17 mph, with gusts as high as 31 mph.
M.L.King Day
Partly sunny and cold, with a high near 4. West wind 10 to 14 mph, with gusts as high as 28 mph.
Monday Night
Partly cloudy, with a low around -4. West wind 3 to 8 mph. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 17. Southwest wind 3 to 6 mph.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 10. Calm wind becoming west around 5 mph after midnight.
Wednesday
A 20 percent chance of snow before noon. Partly sunny, with a high near 20. West wind 5 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly cloudy, with a low around 3. West wind 3 to 6 mph. Winds could gust as high as 18 mph.
Thursday
Partly sunny, with a high near 14. West wind 3 to 7 mph.
Thursday Night
Mostly cloudy, with a low around -1. Light west wind.
Friday
A 20 percent chance of snow. Partly sunny, with a high near 15. West wind 3 to 7 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:
6:51 am CST Jan 17, 2026
Forecast Valid:
7am CST Jan 17, 2026-6pm CST Jan 23, 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