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.

Fair

57°F

14°C

Humidity 59%
Wind Speed SW 10 mph
Barometer 30.01 in (1017.1 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 9 Nov 10:55 am CST
Extended Forecast for

3 Miles ESE Ontario WI

  • Today

    Today: Mostly sunny, with a high near 62. Southwest wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 62 °F

    Mostly Sunny

  • Tonight

    Tonight: Clear, with a low around 34. Southwest wind around 6 mph becoming light and variable in the evening.

    Low: 34 °F

    Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 60. West wind around 5 mph becoming calm in the afternoon.

    High: 60 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 5am. Increasing clouds, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Veterans Day

    Veterans Day: A 30 percent chance of showers. Partly sunny, with a high near 53. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 53 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 29. North wind around 6 mph.

    Low: 29 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 44. North wind 5 to 13 mph.

    High: 44 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25. North wind 3 to 6 mph.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43. North wind 3 to 7 mph.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 62. Southwest wind 6 to 11 mph, with gusts as high as 21 mph.
Tonight
Clear, with a low around 34. Southwest wind around 6 mph becoming light and variable in the evening.
Tuesday
Increasing clouds, with a high near 60. West wind around 5 mph becoming calm in the afternoon.
Tuesday Night
A 20 percent chance of showers after 5am. Increasing clouds, with a low around 37. Calm wind.
Veterans Day
A 30 percent chance of showers. Partly sunny, with a high near 53. Calm wind becoming north 5 to 7 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 29. North wind around 6 mph.
Thursday
Partly sunny, with a high near 44. North wind 5 to 13 mph.
Thursday Night
Partly cloudy, with a low around 25. North wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 43. North wind 3 to 7 mph.
Friday Night
Mostly clear, with a low around 23. Calm wind.
Saturday
Sunny, with a high near 47. Calm wind.
Saturday Night
Mostly clear, with a low around 27. Calm wind.
Sunday
Sunny, with a high near 51. Calm wind becoming south around 6 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Ontario WI
 43.71°N 90.53°W
Last Update:
11:01 am CST Nov 9, 2026
Forecast Valid:
11am CST Nov 9, 2026-6pm CST Nov 15, 2026
 
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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