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Weather for Ontario, WIOntario, WI Weather & Current Conditions

54651 Weather (Ontario, WI)

Ontario, WI WeatherCurrent Conditions and Weather for Ontario, Wisconsin
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Clear at Ontario (54651), temperature is 54°F12°C, dew point 52°F11°C, humidity 94%. Wind direction is N at 0 mphat 0 km/h with visibility of 10 mi16 km. Barometric pressure is 29.97 in1014 mb. Last update: 9:00 am.*
*Time is approximately 9:00 am Fri, Sep 11, 2026. Time will be within 15 minutes of current local time. Ontario weather forecast data is updated every 15 minutes.

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If it rains anymore this summer, my gutters are going to file for arbitration. ―Guy Lawrence
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Ontario WI Weather - 10:00 am

Ontario Weather Forecast

Weather forecast for: Ontario WI
Last Update: 8:41 am CDT Sep 11, 2026
Today: Sunny, with a high near 81. Light south wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Tonight: A slight chance of showers between 3am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 63. South wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 79. Southwest wind 9 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.
Saturday Night: Mostly clear, with a low around 50. Northwest wind around 5 mph becoming calm in the evening.
Sunday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 70. Calm wind becoming northwest around 5 mph in the afternoon.
Sunday Night: A 40 percent chance of showers, mainly after 1am. Partly cloudy, with a low around 48. Calm wind becoming east around 5 mph after midnight. New precipitation amounts between a tenth and quarter of an inch possible.
Monday: Showers, with thunderstorms also possible after 1pm. High near 75. Southeast wind 8 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 90%.
Monday Night: Showers and possibly a thunderstorm. Low around 56. Breezy, with a south wind 9 to 16 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%.
Tuesday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 71. Northwest wind 6 to 8 mph.
Tuesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 49. Calm wind.
Wednesday: A 30 percent chance of showers. Partly sunny, with a high near 72. Calm wind becoming east around 5 mph in the afternoon.
Wednesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Calm wind.
Thursday: A 20 percent chance of showers. Mostly sunny, with a high near 76. Calm wind becoming west around 5 mph in the afternoon.

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