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.

Partly Cloudy

46°F

8°C

Humidity 75%
Wind Speed N 0 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 14 Feb 06:20 AM PST
Extended Forecast for

Ontario International Arpt CA

  • Today

    Today: Mostly sunny, with a high near 69. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 46. West wind 5 to 10 mph becoming light after midnight.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 65. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 65 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain, mainly after 4am. Mostly cloudy, with a low around 47. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Chance Rain

  • Washington's Birthday

    Washington's Birthday: Rain, mainly after 10am. High near 57. Southeast wind 10 to 15 mph becoming southwest 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 57 °F

    Rain

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms after 4am. Low around 46. Chance of precipitation is 100%.

    Low: 46 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, mainly after 10am. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.

    High: 57 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers. Cloudy, with a low around 44.

    Low: 44 °F

    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before 4pm. Mostly cloudy, with a high near 56.

    High: 56 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 69. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 46. West wind 5 to 10 mph becoming light after midnight.
Sunday
Partly sunny, with a high near 65. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
A chance of rain, mainly after 4am. Mostly cloudy, with a low around 47. Southwest wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Washington's Birthday
Rain, mainly after 10am. High near 57. Southeast wind 10 to 15 mph becoming southwest 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
Showers and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms after 4am. Low around 46. Chance of precipitation is 100%.
Tuesday
Showers likely, mainly after 10am. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.
Tuesday Night
Showers. Cloudy, with a low around 44.
Wednesday
Showers likely, mainly before 4pm. Mostly cloudy, with a high near 56.
Wednesday Night
A chance of showers, mainly before 10pm. Mostly cloudy, with a low around 41.
Thursday
A slight chance of showers. Mostly sunny, with a high near 60.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 40.
Friday
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:
1:09 am PST Feb 14, 2026
Forecast Valid:
6am PST Feb 14, 2026-6pm PST Feb 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation