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.

Overcast

63°F

17°C

Humidity 46%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 05 Feb 10:53 PM PST
Extended Forecast for

Ontario International Arpt CA

  • Tonight

    Tonight: A slight chance of showers. Mostly cloudy, with a low around 53. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 53 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 72. Light west wind becoming southwest 5 to 10 mph in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50. West wind 5 to 10 mph becoming light and variable in the evening.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 76. Light southwest wind becoming west 5 to 10 mph in the afternoon.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 52. West wind around 5 mph becoming calm.

    Low: 52 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of showers. Mostly cloudy, with a low around 53. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 72. Light west wind becoming southwest 5 to 10 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 50. West wind 5 to 10 mph becoming light and variable in the evening.
Saturday
Sunny, with a high near 76. Light southwest wind becoming west 5 to 10 mph in the afternoon.
Saturday Night
Clear, with a low around 52. West wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 52.
Monday
Mostly sunny, with a high near 78.
Monday Night
Mostly cloudy, with a low around 52.
Tuesday
A chance of showers after 10am. Mostly cloudy, with a high near 68.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 48.
Wednesday
A chance of showers. Mostly cloudy, with a high near 64.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 45.
Thursday
A slight chance of showers. Partly 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:
7:32 pm PST Feb 5, 2026
Forecast Valid:
11pm PST Feb 5, 2026-6pm PST Feb 12, 2026
 
Forecast Discussion
 
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Additional Resources

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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