Current conditions at
Sparta, Sparta / Fort McCoy Airport (KCMY)
Lat: 43.96°NLon: 90.74°WElev: 837ft.
Mostly Cloudy
61°F
16°C
| Humidity | 63% |
| Wind Speed | SE 3 mph |
| Barometer | 30.05 in (1018.1 mb) |
| Dewpoint | 48°F (9°C) |
| Visibility | 10.00 mi |
| Last update | 3 Oct 6:55 pm CDT |
Extended Forecast for
Ontario WI
Tonight
Low: 48 °F
Chance
ShowersSunday
High: 66 °F
Sunny
Sunday Night
Low: 40 °F
Mostly Clear
Monday
High: 66 °F
Sunny
Monday Night
Low: 45 °F
Mostly Clear
Tuesday
High: 71 °F
Sunny then
Sunny and
BreezyTuesday Night
Low: 51 °F
Mostly Clear
Wednesday
High: 72 °F
Sunny
Wednesday Night
Low: 45 °F
Mostly Clear
Detailed Forecast
Tonight
A chance of showers between 8pm and 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 48. South wind 5 to 7 mph becoming west after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Sunny, with a high near 66. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 40. Calm wind.
Monday
Sunny, with a high near 66. Calm wind.
Monday Night
Mostly clear, with a low around 45. Light and variable wind.
Tuesday
Sunny, with a high near 71. Breezy, with a southwest wind 6 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly clear, with a low around 51. Southwest wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 22 mph.
Wednesday
Sunny, with a high near 72. Light west wind becoming northwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 45. Light west wind.
Thursday
Mostly sunny, with a high near 69. Calm wind becoming west 5 to 7 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 45. Calm wind.
Friday
Mostly sunny, with a high near 69. Calm wind becoming southwest around 5 mph.
Friday Night
Partly cloudy, with a low around 50. Light south wind.
Saturday
Sunny, with a high near 74. Breezy, with a south wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph.
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
5:41 pm CDT Oct 3, 2026
7pm CDT Oct 3, 2026-6pm CDT Oct 10, 2026
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