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.

Mist

55°F

13°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 55°F (13°C)
Visibility 5.00 mi
Last update 09 Nov 02:20 AM PST
Extended Forecast for

Ontario International Arpt CA

  • Overnight

    Overnight: Clear, with a low around 59. Calm wind.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 89. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 59. West wind around 5 mph becoming calm.

    Low: 59 °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 59. North wind around 5 mph becoming calm.

    Low: 59 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 58.

    Low: 58 °F

    Patchy Fog

  • Wednesday

    Wednesday: Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny

  • Wednesday Night

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

    Low: 56 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
Clear, with a low around 59. Calm wind.
Sunday
Sunny, with a high near 89. Calm wind becoming northeast around 5 mph in the afternoon.
Sunday Night
Clear, with a low around 59. West wind around 5 mph becoming calm.
Monday
Sunny, with a high near 90. Calm wind becoming east around 5 mph.
Monday Night
Partly cloudy, with a low around 59. North wind around 5 mph becoming calm.
Veterans Day
Mostly sunny, with a high near 85.
Tuesday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 58.
Wednesday
Partly sunny, with a high near 76.
Wednesday Night
A slight chance of showers after 4am. Mostly cloudy, with a low around 56.
Thursday
Showers likely, mainly after 4pm. Partly sunny, with a high near 71.
Thursday Night
Showers. Mostly cloudy, with a low around 54.
Friday
A chance of showers. Mostly cloudy, with a high near 63.
Friday Night
A chance of showers. Mostly cloudy, with a low around 48.
Saturday
A chance of showers. Partly sunny, with a high near 63.
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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:
1:02 am PST Nov 9, 2025
Forecast Valid:
2am PST Nov 9, 2025-6pm PST Nov 15, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation