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

77°F

25°C

Humidity 31%
Wind Speed WSW 6 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 11 Nov 05:15 PM PST
Extended Forecast for

Ontario International Arpt CA

  • Tonight

    Tonight: Clear, with a low around 59. West wind around 5 mph becoming calm in the evening.

    Low: 59 °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. Mostly cloudy, with a low around 58. Calm wind becoming west around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after 10am. Mostly cloudy, with a high near 70. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers, mainly before 4am. The rain could be heavy at times. Low around 56. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Heavy Rain

  • Saturday

    Saturday: A chance of showers before 10am. Partly sunny, with a high near 68. Chance of precipitation is 40%.

    High: 68 °F

    Chance
    Showers then
    Partly Sunny

  • Saturday Night

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

    Low: 52 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers after 4am. Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 59. West wind around 5 mph becoming calm in the evening.
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. Mostly cloudy, with a low around 58. Calm wind becoming west around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely, mainly after 10am. Mostly cloudy, with a high near 70. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers, mainly before 4am. The rain could be heavy at times. Low around 56. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A chance of showers before 10am. Partly sunny, with a high near 68. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Sunny, with a high near 69.
Sunday Night
A chance of showers after 4am. Partly cloudy, with a low around 53.
Monday
Showers likely, mainly after 10am. Partly sunny, with a high near 66.
Monday Night
Showers likely. Mostly cloudy, with a low around 49.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
A chance of showers. Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario International Arpt CA
 34.06°N 117.58°W (Elev. 906 ft)
Last Update:
12:06 pm PST Nov 11, 2026
Forecast Valid:
5pm PST Nov 11, 2026-6pm PST Nov 18, 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