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

Hazardous Weather Conditions

Current conditions at

Ontario International Airport (KONT)

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

Overcast

63°F

17°C

Humidity 42%
Wind Speed N 0 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 21 Jan 11:00 AM PST
Extended Forecast for

Ontario International Arpt CA

  • Today

    Today: Mostly cloudy, with a high near 72. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 72 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. Southwest wind around 5 mph becoming calm after midnight.

    Low: 49 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers after 10am. Cloudy, then gradually becoming mostly sunny, with a high near 66. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers. Mostly cloudy, with a low around 48. West wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.

    Low: 48 °F

    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers. Partly sunny, with a high near 65. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 65 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 72. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 49. Southwest wind around 5 mph becoming calm after midnight.
Thursday
A chance of showers after 10am. Cloudy, then gradually becoming mostly sunny, with a high near 66. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A slight chance of showers. Mostly cloudy, with a low around 48. West wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.
Friday
A slight chance of showers. Partly sunny, with a high near 65. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
Mostly clear, with a low around 43.
Sunday
Sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Mostly sunny, with a high near 72.
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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:
2:36 am PST Jan 21, 2026
Forecast Valid:
11am PST Jan 21, 2026-6pm PST Jan 27, 2026
 
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