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Weather for Ontario, CAOntario, CA Weather & Current Conditions

91758 Weather (Ontario, CA)

Ontario, CA WeatherCurrent Conditions and Weather for Ontario, California
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Mostly Cloudy at Ontario (91758), temperature is 66°F19°C, dew point 62°F17°C, humidity 88%. Wind direction is W at 3 mphat 5 km/h with visibility of 10 mi16 km. Barometric pressure is 29.85 in1011 mb. Last update: 4:43 am.*
*Time is approximately 4:43 am Mon, Sep 14, 2026. Time will be within 15 minutes of current local time. Ontario weather forecast data is updated every 15 minutes.

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Ontario CA Weather - 7:43 am

Ontario Weather Forecast

Weather forecast for: 3 Miles E Montclair CA
Last Update: 1:34 am PDT Sep 14, 2026
Today: Patchy fog before 8am. Otherwise, sunny, with a high near 88. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight: Patchy fog after 5am. Otherwise, increasing clouds, with a low around 63. West wind 5 to 10 mph.
Tuesday: Patchy fog before 8am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 84. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night: Mostly clear, with a low around 61. Southwest wind 5 to 10 mph.
Wednesday: Sunny, with a high near 82. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Wednesday Night: Mostly clear, with a low around 60.
Thursday: Sunny, with a high near 84.
Thursday Night: Clear, with a low around 60.
Friday: Sunny, with a high near 86.
Friday Night: Clear, with a low around 61.
Saturday: Sunny, with a high near 88.
Saturday Night: Mostly clear, with a low around 62.
Sunday: Sunny, with a high near 87.

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