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Current conditions at
Sparta, Sparta / Fort McCoy Airport (KCMY)
Lat: 43.96°NLon: 90.74°WElev: 837ft.
Overcast
16°F
-9°C
| Humidity | 69% |
| Wind Speed | NW 3 mph |
| Barometer | 30.50 in (1035.0 mb) |
| Dewpoint | 7°F (-14°C) |
| Visibility | 10.00 mi |
| Last update | 22 Feb 7:55 pm CST |
Extended Forecast for
Ontario WI
Tonight
Low: 6 °F
Partly Cloudy
Monday
High: 24 °F
Mostly Sunny
Monday Night
Low: 12 °F
Mostly Cloudy
Tuesday
High: 37 °F
Chance Snow
Tuesday Night
Low: 11 °F
Mostly Cloudy
Wednesday
High: 26 °F
Mostly Sunny
then Slight
Chance SnowWednesday Night
Low: 11 °F
Chance Snow
Thursday
High: 34 °F
Slight Chance
Snow then
Mostly SunnyThursday Night
Low: 18 °F
Mostly Clear
Detailed Forecast
Tonight
Partly cloudy, with a low around 6. Wind chill values as low as -2. Northwest wind around 7 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 24. Wind chill values as low as -3. Northwest wind around 5 mph becoming calm in the afternoon.
Monday Night
Mostly cloudy, with a low around 12. Calm wind becoming south 5 to 7 mph after midnight. Winds could gust as high as 18 mph.
Tuesday
A 50 percent chance of snow. Partly sunny, with a high near 37. South wind 7 to 11 mph becoming west in the afternoon. Winds could gust as high as 22 mph. New snow accumulation of less than a half inch possible.
Tuesday Night
Mostly cloudy, with a low around 11. Northwest wind 7 to 10 mph, with gusts as high as 22 mph.
Wednesday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 26. Northwest wind 3 to 6 mph.
Wednesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 11. Calm wind.
Thursday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 34. Calm wind becoming northwest around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 18. Southwest wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 47. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 21. Southwest wind around 7 mph becoming northwest after midnight. Winds could gust as high as 18 mph.
Saturday
A 20 percent chance of snow. Mostly sunny, with a high near 36. Northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 8. Northwest wind 3 to 7 mph.
Sunday
A 20 percent chance of snow. Mostly sunny, with a high near 29. Light and variable wind becoming north 5 to 7 mph in the morning.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Ontario WI
43.73°N 90.58°W
43.73°N 90.58°W
9:07 pm CST Feb 22, 2026
9pm CST Feb 22, 2026-6pm CST Mar 1, 2026
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