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

20°C

68°F

Humidity 20%
Wind Speed SW 12 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint -3°C (27°F)
Visibility 16 km
Last update 18 May 06:20 PM PDT
Extended Forecast for

Ontario International Arpt CA

  • Tonight

    Tonight: Mostly clear, with a low around 13. West wind 15 to 25 km/h decreasing to 5 to 15 km/h after midnight. Winds could gust as high as 40 km/h.

    Low: 13 °C

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 31. West wind 5 to 15 km/h increasing to 15 to 25 km/h in the afternoon. Winds could gust as high as 35 km/h.

    High: 31 °C

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 16. West wind 15 to 20 km/h becoming light and variable in the evening. Winds could gust as high as 35 km/h.

    Low: 16 °C

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 33. Light and variable wind becoming southwest 15 to 20 km/h in the afternoon. Winds could gust as high as 35 km/h.

    High: 33 °C

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 17. West wind 15 to 20 km/h becoming light and variable in the evening. Winds could gust as high as 30 km/h.

    Low: 17 °C

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 35.

    High: 35 °C

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 17.

    Low: 17 °C

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 34.

    High: 34 °C

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 17.

    Low: 17 °C

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 13. West wind 15 to 25 km/h decreasing to 5 to 15 km/h after midnight. Winds could gust as high as 40 km/h.
Monday
Sunny, with a high near 31. West wind 5 to 15 km/h increasing to 15 to 25 km/h in the afternoon. Winds could gust as high as 35 km/h.
Monday Night
Mostly clear, with a low around 16. West wind 15 to 20 km/h becoming light and variable in the evening. Winds could gust as high as 35 km/h.
Tuesday
Sunny, with a high near 33. Light and variable wind becoming southwest 15 to 20 km/h in the afternoon. Winds could gust as high as 35 km/h.
Tuesday Night
Clear, with a low around 17. West wind 15 to 20 km/h becoming light and variable in the evening. Winds could gust as high as 30 km/h.
Wednesday
Sunny, with a high near 35.
Wednesday Night
Mostly clear, with a low around 17.
Thursday
Sunny, with a high near 34.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 31.
Friday Night
Partly cloudy, with a low around 16.
Saturday
Sunny, with a high near 29.
Saturday Night
Mostly clear, with a low around 15.
Sunday
Sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario International Arpt CA
 34.06°N 117.58°W (Elev. 906 m)
Last Update:
1:03 pm PDT May 18, 2025
Forecast Valid:
6pm PDT May 18, 2025-6pm PDT May 25, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation