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

63°F

17°C

Humidity 42%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 11 Nov 01:55 AM PST
Extended Forecast for

Ontario CA

  • Overnight

    Overnight: Clear, with a low around 59. Calm wind.

    Low: 59 °F

    Clear

  • Veterans Day

    Veterans Day: Sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 58. Calm wind becoming east around 5 mph.

    Low: 58 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers after 10pm. Increasing clouds, with a low around 60. Calm wind becoming northwest around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after 10am. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.

    High: 71 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers, mainly before 4am. The rain could be heavy at times. Low around 57. Chance of precipitation is 90%.

    Low: 57 °F

    Heavy Rain

  • Saturday

    Saturday: A chance of showers before 10am. Partly sunny, with a high near 68.

    High: 68 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 59. Calm wind.
Veterans Day
Sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 58. Calm wind becoming east around 5 mph.
Thursday
Sunny, with a high near 81. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Thursday Night
A chance of showers after 10pm. Increasing clouds, with a low around 60. Calm wind becoming northwest around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely, mainly after 10am. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Friday Night
Showers, mainly before 4am. The rain could be heavy at times. Low around 57. Chance of precipitation is 90%.
Saturday
A chance of showers before 10am. Partly sunny, with a high near 68.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 70.
Sunday Night
A chance of showers. Partly cloudy, with a low around 53.
Monday
Showers likely. Mostly cloudy, with a high near 67.
Monday Night
Showers likely. Mostly cloudy, with a low around 50.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 66.
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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:
12:13 am PST Nov 11, 2026
Forecast Valid:
2am PST Nov 11, 2026-6pm PST Nov 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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