National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Ontario International Airport (KONT)

Lat: 34.05316°NLon: 117.57685°WElev: 906.0ft.

Clear

72°F

22°C

Humidity 60%
Wind Speed WSW 10 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 16 Jul 09:05 PM PDT
Extended Forecast for

Ontario CA

  • Tonight

    Tonight: Mostly clear, with a low around 63. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Patchy fog between 8am and 11am. Otherwise, sunny, with a high near 86. West wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 86 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers after 11pm. Partly cloudy, with a low around 64. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.

    Low: 64 °F

    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers before 11am. Mostly sunny, with a high near 86. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.

    High: 86 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 63. West wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Patchy fog between 8am and 11am. Otherwise, sunny, with a high near 86. West wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A slight chance of showers after 11pm. Partly cloudy, with a low around 64. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.
Friday
A slight chance of showers before 11am. Mostly sunny, with a high near 86. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.
Friday Night
Mostly clear, with a low around 63. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 62.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.05°N 117.64°W (Elev. 919 ft)
Last Update:
6:37 pm PDT Jul 16, 2025
Forecast Valid:
9pm PDT Jul 16, 2025-6pm PDT Jul 23, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation