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

66°F

19°C

Humidity 60%
Wind Speed N 0 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 10 Nov 09:53 PM PST
Extended Forecast for

Ontario CA

  • Tonight

    Tonight: Clear, with a low around 58. Calm wind becoming northeast around 5 mph.

    Low: 58 °F

    Clear

  • Veterans Day

    Veterans Day: Sunny, with a high near 86. Calm wind becoming west around 5 mph.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 57. Calm wind becoming northeast around 5 mph.

    Low: 57 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57. Northwest wind around 5 mph becoming calm.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers. Partly sunny, with a high near 74. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.

    Low: 56 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, mainly before 10am. Partly sunny, with a high near 71.

    High: 71 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers after 10pm. Partly cloudy, with a low around 54.

    Low: 54 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 58. Calm wind becoming northeast around 5 mph.
Veterans Day
Sunny, with a high near 86. Calm wind becoming west around 5 mph.
Wednesday Night
Clear, with a low around 57. Calm wind becoming northeast around 5 mph.
Thursday
Sunny, with a high near 82. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 57. Northwest wind around 5 mph becoming calm.
Friday
A slight chance of showers. Partly sunny, with a high near 74. Chance of precipitation is 20%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
Saturday
A chance of showers, mainly before 10am. Partly sunny, with a high near 71.
Saturday Night
A slight chance of showers after 10pm. Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 54.
Monday
A chance of showers. Partly sunny, with a high near 68.
Monday Night
Showers likely. Mostly cloudy, with a low around 50.
Tuesday
A chance of showers. Mostly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.03°N 117.58°W (Elev. 853 ft)
Last Update:
12:37 pm PST Nov 10, 2026
Forecast Valid:
10pm PST Nov 10, 2026-6pm PST Nov 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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