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

63°F

17°C

Humidity 72%
Wind Speed SSW 5 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 27 Jun 06:35 AM PDT
Extended Forecast for

3 Miles SSE Rancho Cucamonga CA

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 79. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 79 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 58. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 77. Light south wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 77 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday 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

  • Monday

    Monday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 78. Light southwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 57.

    Low: 57 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 78.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

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

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 79. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 58. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 77. Light south wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday 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.
Monday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 78. Light southwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Increasing clouds, with a low around 57.
Tuesday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Clear, with a low around 56.
Thursday
Sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Rancho Cucamonga CA
 34.09°N 117.53°W (Elev. 1106 ft)
Last Update:
12:02 am PDT Jun 27, 2026
Forecast Valid:
6am PDT Jun 27, 2026-6pm PDT Jul 3, 2026
 
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