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

61°F

16°C

Humidity 77%
Wind Speed WSW 5 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 13 May 12:05 AM PDT
Extended Forecast for

3 Miles SE Ontario International Arpt CA

  • Overnight

    Overnight: Patchy drizzle after 2am. Mostly cloudy, with a low around 57. West wind around 5 mph.

    Low: 57 °F

    Patchy
    Drizzle

  • Wednesday

    Wednesday: Patchy drizzle before 11am. Mostly cloudy through mid morning, then gradual clearing, with a high near 78. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 78 °F

    Patchy
    Drizzle then
    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 56. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Patchy fog before 11am. Otherwise, sunny, with a high near 81.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy drizzle after 2am. Mostly cloudy, with a low around 57. West wind around 5 mph.
Wednesday
Patchy drizzle before 11am. Mostly cloudy through mid morning, then gradual clearing, with a high near 78. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Increasing clouds, with a low around 56. West wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Mostly clear, with a low around 57. West wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
Patchy fog before 11am. Otherwise, sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 85.
Monday Night
Clear, with a low around 58.
Tuesday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Ontario International Arpt CA
 34.04°N 117.55°W (Elev. 853 ft)
Last Update:
11:29 pm PDT May 12, 2026
Forecast Valid:
12am PDT May 13, 2026-6pm PDT May 19, 2026
 
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