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.

Overcast

64°F

18°C

Humidity 67%
Wind Speed WSW 6 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 11 Oct 06:10 PM PDT
Extended Forecast for

Ontario CA

  • Tonight

    Tonight: Showers. Low around 55. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Showers

  • Columbus Day

    Columbus Day: Showers. High near 67. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Showers

  • Monday Night

    Monday Night: A chance of showers before 11pm. Partly cloudy, with a low around 51. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 74. East wind around 5 mph becoming calm.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 52. West wind around 5 mph becoming calm.

    Low: 52 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

Detailed Forecast

Tonight
Showers. Low around 55. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Columbus Day
Showers. High near 67. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A chance of showers before 11pm. Partly cloudy, with a low around 51. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Sunny, with a high near 74. East wind around 5 mph becoming calm.
Tuesday Night
Clear, with a low around 52. West wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Clear, with a low around 56.
Thursday
Sunny, with a high near 85.
Thursday Night
Clear, with a low around 63.
Friday
Sunny, with a high near 88.
Friday Night
Clear, with a low around 64.
Saturday
Sunny, with a high near 88.
Saturday Night
Clear, with a low around 64.
Sunday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario CA
 34.03°N 117.61°W (Elev. 823 ft)
Last Update:
1:13 pm PDT Oct 11, 2026
Forecast Valid:
6pm PDT Oct 11, 2026-6pm PDT Oct 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