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

38°F

3°C

Humidity 55%
Wind Speed Calm
Barometer 30.14 in (1021.7 mb)
Dewpoint 23°F (-5°C)
Visibility 9.00 mi
Last update 3 Mar 1:55 am CST
Extended Forecast for

2 Miles N Ontario WI

  • Overnight

    Overnight: A slight chance of drizzle and snow before 3am, then a slight chance of snow between 3am and 4am, then a chance of drizzle and snow after 4am. Cloudy, with a low around 32. Light south wind. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 32 °F

    Chance
    Drizzle/Snow

  • Tuesday

    Tuesday: A chance of drizzle and snow, mainly before 7am. Partly sunny, with a high near 50. Calm wind. Chance of precipitation is 30%.

    High: 50 °F

    Chance
    Drizzle/Snow
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog between 2am and 5am. Otherwise, partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Sunny, with a high near 54. Light and variable wind.

    High: 54 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after midnight. Partly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Clear
    then Slight
    Chance Rain

  • Thursday

    Thursday: A 40 percent chance of rain. Mostly cloudy, with a high near 50. Calm wind becoming east around 5 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 38. Light southeast wind.

    Low: 38 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Friday

    Friday: Rain. High near 60. Southeast wind 5 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 100%.

    High: 60 °F

    Rain

  • Friday Night

    Friday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 38. Southwest wind 6 to 8 mph. Chance of precipitation is 70%.

    Low: 38 °F

    Rain Likely

Detailed Forecast

Overnight
A slight chance of drizzle and snow before 3am, then a slight chance of snow between 3am and 4am, then a chance of drizzle and snow after 4am. Cloudy, with a low around 32. Light south wind. Chance of precipitation is 40%. Little or no snow accumulation expected.
Tuesday
A chance of drizzle and snow, mainly before 7am. Partly sunny, with a high near 50. Calm wind. Chance of precipitation is 30%.
Tuesday Night
Patchy fog between 2am and 5am. Otherwise, partly cloudy, with a low around 27. Calm wind.
Wednesday
Sunny, with a high near 54. Light and variable wind.
Wednesday Night
A 20 percent chance of rain after midnight. Partly cloudy, with a low around 33. Calm wind.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 50. Calm wind becoming east around 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 38. Light southeast wind.
Friday
Rain. High near 60. Southeast wind 5 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 100%.
Friday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 38. Southwest wind 6 to 8 mph. Chance of precipitation is 70%.
Saturday
A 20 percent chance of rain before noon. Partly sunny, with a high near 54. West wind 7 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 32. West wind 6 to 8 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Sunday
Mostly sunny, with a high near 59. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 35. West wind 3 to 7 mph. Winds could gust as high as 18 mph.
Monday
Sunny, with a high near 59. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 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:
12:26 am CST Mar 3, 2026
Forecast Valid:
2am CST Mar 3, 2026-6pm CDT Mar 9, 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