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Current conditions at
Sparta, Sparta / Fort McCoy Airport (KCMY)
Lat: 43.96°NLon: 90.74°WElev: 837ft.
Fair
88°F
31°C
| Humidity | 46% |
| Wind Speed | SW 3 mph |
| Barometer | 30.04 in (1017.2 mb) |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Heat Index | 90°F (32°C) |
| Last update | 3 Oct 4:55 pm CDT |
Extended Forecast for
Ontario WI
Tonight
Low: 63 °F
Clear
Saturday
High: 89 °F
Sunny then
Sunny and
BreezySaturday Night
Low: 63 °F
Mostly Clear
Sunday
High: 84 °F
Sunny and
BreezySunday Night
Low: 53 °F
Chance
T-storms then
Showers
LikelyMonday
High: 68 °F
Slight Chance
ShowersMonday Night
Low: 44 °F
Slight Chance
ShowersTuesday
High: 67 °F
Sunny
Tuesday Night
Low: 38 °F
Mostly Clear
Detailed Forecast
Tonight
Clear, with a low around 63. South wind 3 to 6 mph.
Saturday
Sunny, with a high near 89. Breezy, with a south wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph.
Saturday Night
Mostly clear, with a low around 63. South wind 11 to 13 mph, with gusts as high as 26 mph.
Sunday
Sunny, with a high near 84. Breezy, with a south wind 10 to 20 mph, with gusts as high as 31 mph.
Sunday Night
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 53. South wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 20 percent chance of showers. Mostly cloudy, with a high near 68. Northwest wind 5 to 8 mph.
Monday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 44. Calm wind.
Tuesday
Sunny, with a high near 67. Calm wind becoming northwest 5 to 7 mph in the morning.
Tuesday Night
Mostly clear, with a low around 38. Light and variable wind.
Wednesday
Sunny, with a high near 66. Calm wind becoming southeast 5 to 7 mph in the morning.
Wednesday Night
Mostly clear, with a low around 40. Light southeast wind.
Thursday
Sunny, with a high near 68. South wind 3 to 8 mph.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 47. South wind 3 to 6 mph.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 69. Southwest wind around 7 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
4:28 pm CDT Oct 3, 2025
5pm CDT Oct 3, 2025-6pm CDT Oct 10, 2025
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