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.

Rain

59°F

15°C

Humidity 87%
Wind Speed S 10 MPH
Barometer 29.79 in (1008.81 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 13 Nov 04:20 PM PST
Extended Forecast for

Ontario CA

  • This Afternoon

    This Afternoon: A chance of showers. Partly sunny, with a high near 68. West wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers, mainly after 10pm. Low around 55. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 55 °F

    Showers

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 69. Calm wind.

    High: 69 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 51. North wind around 5 mph becoming calm.

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 72. Calm wind becoming west around 5 mph in the afternoon.

    High: 72 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers between 10am and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 69. Chance of precipitation is 20%.

    High: 69 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers before 10am. Mostly sunny, with a high near 64.

    High: 64 °F

    Chance
    Showers then
    Sunny

Detailed Forecast

This Afternoon
A chance of showers. Partly sunny, with a high near 68. West wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers, mainly after 10pm. Low around 55. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 69. Calm wind.
Saturday Night
Mostly clear, with a low around 51. North wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 72. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 53.
Monday
A slight chance of showers between 10am and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 69. Chance of precipitation is 20%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 50.
Tuesday
A chance of showers before 10am. Mostly sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 66.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 48.
Thursday
A chance of showers. Partly sunny, with a high near 64.
Thursday Night
A chance of showers. Partly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 65.
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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:
12:19 pm PST Nov 13, 2026
Forecast Valid:
4pm PST Nov 13, 2026-6pm PST Nov 20, 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