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.

Partly Cloudy

18°F

-8°C

Humidity 54%
Wind Speed Calm
Barometer 30.49 in (1034.3 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Last update 1 Mar 7:55 am CST
Extended Forecast for

2 Miles N Ontario WI

  • Today

    Today: Sunny, with a high near 31. Calm wind.

    High: 31 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 15. Calm wind.

    Low: 15 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 42. Calm wind becoming south 5 to 7 mph.

    High: 42 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A chance of rain between midnight and 3am, then a chance of snow after 3am. Mostly cloudy, with a low around 29. Calm wind. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Tuesday

    Tuesday: A 40 percent chance of rain before noon. Mostly cloudy, with a high near 44. Light east wind. New precipitation amounts of less than a tenth of an inch possible.

    High: 44 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of rain. Mostly sunny, with a high near 46. Calm wind becoming east around 5 mph.

    High: 46 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after midnight. Partly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: A 30 percent chance of rain. Mostly cloudy, with a high near 52. Calm wind becoming east around 5 mph.

    High: 52 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 31. Calm wind.
Tonight
Mostly clear, with a low around 15. Calm wind.
Monday
Increasing clouds, with a high near 42. Calm wind becoming south 5 to 7 mph.
Monday Night
A chance of rain between midnight and 3am, then a chance of snow after 3am. Mostly cloudy, with a low around 29. Calm wind. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Tuesday
A 40 percent chance of rain before noon. Mostly cloudy, with a high near 44. Light east wind. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Partly cloudy, with a low around 29. Calm wind.
Wednesday
A 30 percent chance of rain. Mostly sunny, with a high near 46. Calm wind becoming east around 5 mph.
Wednesday Night
A 20 percent chance of rain after midnight. Partly cloudy, with a low around 32. Calm wind.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 52. Calm wind becoming east around 5 mph.
Thursday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 38. Calm wind becoming southeast around 5 mph after midnight.
Friday
Rain likely. Mostly cloudy, with a high near 57. South wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 34. Southwest wind around 6 mph.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 54. West wind around 7 mph.
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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:
2:51 am CST Mar 1, 2026
Forecast Valid:
9am CST Mar 1, 2026-6pm CST Mar 7, 2026
 
Forecast Discussion
 
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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