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

50°F

10°C

Humidity 89%
Wind Speed SSW 3 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 12 Feb 07:53 AM PST
Extended Forecast for

Ontario CA

  • Today

    Today: Mostly sunny, with a high near 67. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 67 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 47. West wind around 5 mph becoming calm in the evening.

    Low: 47 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 71. Light northwest wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 71 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46. West wind around 5 mph becoming calm in the evening.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 71. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 71 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain after 10am. Mostly cloudy, with a high near 67. Chance of precipitation is 20%.

    High: 67 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly after 4am. The rain could be heavy at times. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Heavy Rain

  • Washington's Birthday

    Washington's Birthday: Rain. The rain could be heavy at times. Cloudy, with a high near 59.

    High: 59 °F

    Heavy Rain

Detailed Forecast

Today
Mostly sunny, with a high near 67. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 47. West wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 71. Light northwest wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 46. West wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 71. 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 48.
Sunday
A slight chance of rain after 10am. Mostly cloudy, with a high near 67. Chance of precipitation is 20%.
Sunday Night
Rain likely, mainly after 4am. The rain could be heavy at times. Mostly cloudy, with a low around 49.
Washington's Birthday
Rain. The rain could be heavy at times. Cloudy, with a high near 59.
Monday Night
Showers. Cloudy, with a low around 47.
Tuesday
Showers. Cloudy, with a high near 59.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 45.
Wednesday
A chance of showers. Partly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.03°N 117.61°W (Elev. 823 ft)
Last Update:
1:29 am PST Feb 12, 2026
Forecast Valid:
8am PST Feb 12, 2026-6pm PST Feb 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation