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.

Mostly Cloudy

53°F

12°C

Humidity 50%
Wind Speed Calm
Barometer 29.86 in (1011.7 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 31 Mar 11:55 am CDT
Extended Forecast for

2 Miles N Ontario WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 58. Breezy, with a northwest wind 10 to 16 mph.

    High: 58 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 32. North wind 5 to 8 mph, with gusts as high as 18 mph.

    Low: 32 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 10 percent chance of showers after 5pm. Partly sunny, with a high near 47. East wind 5 to 13 mph, with gusts as high as 22 mph.

    High: 47 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Rain showers, possibly mixed with sleet before 4am, then rain or freezing rain. The sleet could be heavy at times. Some thunder is also possible. Low around 31. East wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. New sleet accumulation of less than a half inch possible.

    Low: 31 °F

    Wintry Mix

  • Thursday

    Thursday: Rain or freezing rain, becoming all rain after 10am. Some thunder is also possible. High near 53. East wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New ice accumulation of less than a 0.1 of an inch possible.

    High: 53 °F

    Rain/Freezing
    Rain then
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 32. West wind 5 to 7 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 54. Calm wind becoming east 5 to 7 mph in the afternoon.

    High: 54 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 36. East wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    Low: 36 °F

    Showers

  • Saturday

    Saturday: Showers likely. Mostly cloudy, with a high near 49. Breezy, with a northeast wind 9 to 16 mph becoming northwest in the afternoon. Chance of precipitation is 70%.

    High: 49 °F

    Showers
    Likely and
    Breezy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 58. Breezy, with a northwest wind 10 to 16 mph.
Tonight
Partly cloudy, with a low around 32. North wind 5 to 8 mph, with gusts as high as 18 mph.
Wednesday
A 10 percent chance of showers after 5pm. Partly sunny, with a high near 47. East wind 5 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Rain showers, possibly mixed with sleet before 4am, then rain or freezing rain. The sleet could be heavy at times. Some thunder is also possible. Low around 31. East wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. New sleet accumulation of less than a half inch possible.
Thursday
Rain or freezing rain, becoming all rain after 10am. Some thunder is also possible. High near 53. East wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New ice accumulation of less than a 0.1 of an inch possible.
Thursday Night
A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 32. West wind 5 to 7 mph, with gusts as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 54. Calm wind becoming east 5 to 7 mph in the afternoon.
Friday Night
Showers and possibly a thunderstorm. Low around 36. East wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Saturday
Showers likely. Mostly cloudy, with a high near 49. Breezy, with a northeast wind 9 to 16 mph becoming northwest in the afternoon. Chance of precipitation is 70%.
Saturday Night
A chance of rain showers before 1am, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 30. Northwest wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 46. Northwest wind 11 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 26. Northwest wind 5 to 8 mph becoming calm after midnight.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 50. West wind 3 to 8 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:
1:16 pm CDT Mar 31, 2026
Forecast Valid:
1pm CDT Mar 31, 2026-6pm CDT Apr 6, 2026
 
Forecast Discussion
 
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Additional Resources

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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