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

55°F

13°C

Humidity 66%
Wind Speed N 0 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 13 Feb 12:35 AM PST
Extended Forecast for

Ontario International Arpt CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 70. Light west wind becoming southwest 5 to 10 mph in the afternoon.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 45. West wind around 5 mph becoming calm in the evening.

    Low: 45 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 70. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47. West wind 5 to 10 mph.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of rain after 10pm. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.

    Low: 47 °F

    Chance Rain

  • Washington's Birthday

    Washington's Birthday: Rain, mainly between 10am and 4pm, then showers and possibly a thunderstorm after 4pm. Cloudy, with a high near 59.

    High: 59 °F

    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 10pm, then rain, mainly after 10pm. Cloudy, with a low around 47.

    Low: 47 °F

    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 45. Calm wind.
Friday
Sunny, with a high near 70. Light west wind becoming southwest 5 to 10 mph in the afternoon.
Friday Night
Mostly clear, with a low around 45. West wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 70. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly cloudy, with a low around 47. West wind 5 to 10 mph.
Sunday
Mostly cloudy, with a high near 66.
Sunday Night
A chance of rain after 10pm. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
Washington's Birthday
Rain, mainly between 10am and 4pm, then showers and possibly a thunderstorm after 4pm. Cloudy, with a high near 59.
Monday Night
Showers and possibly a thunderstorm before 10pm, then rain, mainly after 10pm. Cloudy, with a low around 47.
Tuesday
Rain. Mostly cloudy, with a high near 59.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 44.
Wednesday
A chance of rain. Partly sunny, with a high near 59.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 43.
Thursday
A chance of rain. Partly sunny, with a high near 61.
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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:
11:55 am PST Feb 12, 2026
Forecast Valid:
12am PST Feb 13, 2026-6pm PST Feb 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation