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

66°F

19°C

Humidity 65%
Wind Speed WSW 5 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 07 Apr 08:53 PM PDT
Extended Forecast for

Ontario International Arpt CA

  • Tonight

    Tonight: Clear, with a low around 58. West wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 59. Southwest wind 5 to 10 mph becoming light west in the evening.

    Low: 59 °F

    Patchy Fog

  • Thursday

    Thursday: Partly sunny, with a high near 80. Light southwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 80 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57. Southwest wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 57 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 76.

    High: 76 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.

    Low: 55 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 67.

    High: 67 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 58. West wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 83. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 59. Southwest wind 5 to 10 mph becoming light west in the evening.
Thursday
Partly sunny, with a high near 80. Light southwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 57. Southwest wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 76.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 67.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 53.
Sunday
A chance of showers, mainly after 11am. Partly sunny, with a high near 66.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 49.
Monday
Mostly sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 78.
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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:
6:27 pm PDT Apr 7, 2026
Forecast Valid:
9pm PDT Apr 7, 2026-6pm PDT Apr 14, 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