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

86°F

30°C

Humidity 13%
Wind Speed NE 5 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 09 Nov 05:20 PM PST
Extended Forecast for

Ontario International Arpt CA

  • Tonight

    Tonight: Clear, with a low around 60. Southwest wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 90. Calm wind becoming east around 5 mph.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. North wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 86. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 86 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 59. West wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 77.

    High: 77 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A slight chance of showers after 4am. Mostly cloudy, with a low around 56. Chance of precipitation is 10%.

    Low: 56 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, mainly after 10am. Mostly cloudy, with a high near 68.

    High: 68 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Showers
    Likely

Detailed Forecast

Tonight
Clear, with a low around 60. Southwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 90. Calm wind becoming east around 5 mph.
Monday Night
Partly cloudy, with a low around 60. North wind around 5 mph becoming calm in the evening.
Veterans Day
Partly sunny, with a high near 86. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 59. West wind around 5 mph becoming calm in the evening.
Wednesday
Mostly cloudy, with a high near 77.
Wednesday Night
A slight chance of showers after 4am. Mostly cloudy, with a low around 56. Chance of precipitation is 10%.
Thursday
A chance of showers, mainly after 10am. Mostly cloudy, with a high near 68.
Thursday Night
Showers likely. Mostly cloudy, with a low around 51.
Friday
A chance of showers. Mostly cloudy, with a high near 61.
Friday Night
A chance of showers. Mostly cloudy, with a low around 46.
Saturday
A slight chance of showers. Mostly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Mostly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario International Arpt CA
 34.06°N 117.58°W (Elev. 906 ft)
Last Update:
1:01 pm PST Nov 9, 2025
Forecast Valid:
5pm PST Nov 9, 2025-6pm PST Nov 16, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation