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 82%
Wind Speed N 0 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 02 Jan 04:20 PM PST
Extended Forecast for

Ontario International Arpt CA

  • This Afternoon

    This Afternoon: A slight chance of showers. Partly sunny, with a high near 66. Southwest wind around 5 mph. Chance of precipitation is 20%.

    High: 66 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of showers, mainly after 10pm. Mostly cloudy, with a low around 54. Calm wind. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 54 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers, mainly after 10am. High near 63. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 63 °F

    Showers

  • Saturday Night

    Saturday Night: Showers, mainly before 10pm. Low around 54. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 54 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 10am. Mostly cloudy, with a high near 62. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 62 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely, mainly before 10pm. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers, mainly before 10am. Partly sunny, with a high near 61. Chance of precipitation is 30%.

    High: 61 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly after 10pm. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Partly sunny, with a high near 61.

    High: 61 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of showers. Partly sunny, with a high near 66. Southwest wind around 5 mph. Chance of precipitation is 20%.
Tonight
A chance of showers, mainly after 10pm. Mostly cloudy, with a low around 54. Calm wind. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Showers, mainly after 10am. High near 63. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Showers, mainly before 10pm. Low around 54. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Showers likely, mainly after 10am. Mostly cloudy, with a high near 62. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers likely, mainly before 10pm. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Monday
A chance of showers, mainly before 10am. Partly sunny, with a high near 61. Chance of precipitation is 30%.
Monday Night
A chance of showers, mainly after 10pm. Mostly cloudy, with a low around 47.
Tuesday
A chance of showers. Partly sunny, with a high near 61.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 46.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 61.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 43.
Thursday
A slight chance of showers. Mostly sunny, with a high near 61.
Thursday Night
Mostly clear, with a low around 42.
Friday
Sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario International Arpt CA
 34.05°N 117.61°W (Elev. 902 ft)
Last Update:
12:55 pm PST Jan 2, 2026
Forecast Valid:
4pm PST Jan 2, 2026-6pm PST Jan 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation