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

93°F

34°C

Humidity 10%
Wind Speed ENE 8 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 09 Nov 12:53 PM PST
Extended Forecast for

Ontario CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 90. North wind around 5 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 59. Calm wind becoming southeast around 5 mph.

    Low: 59 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 90. East wind around 5 mph becoming calm.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. Calm wind becoming north around 5 mph.

    Low: 60 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 86. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 86 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 77.

    High: 77 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A slight chance of showers after 4am. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, mainly after 10am. Mostly cloudy, with a high near 68.

    High: 68 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 90. North wind around 5 mph.
Tonight
Clear, with a low around 59. Calm wind becoming southeast around 5 mph.
Monday
Sunny, with a high near 90. East wind around 5 mph becoming calm.
Monday Night
Partly cloudy, with a low around 60. Calm wind becoming north around 5 mph.
Veterans Day
Partly sunny, with a high near 86. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 59.
Wednesday
Mostly cloudy, with a high near 77.
Wednesday Night
A slight chance of showers after 4am. Mostly cloudy, with a low around 55.
Thursday
A chance of showers, mainly after 10am. Mostly cloudy, with a high near 68.
Thursday Night
Showers likely. Mostly cloudy, with a low around 50.
Friday
A chance of showers. Mostly cloudy, with a high near 61.
Friday Night
A chance of showers. Mostly cloudy, with a low around 45.
Saturday
A slight chance of showers. Mostly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.03°N 117.58°W (Elev. 853 ft)
Last Update:
1:01 pm PST Nov 9, 2025
Forecast Valid:
1pm PST Nov 9, 2025-6pm PST Nov 15, 2025
 
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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