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 WSW 8 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 30 Jun 04:35 AM PDT
Extended Forecast for

3 Miles SSE Rancho Cucamonga CA

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 78. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 78 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, increasing clouds, with a low around 57. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, 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

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. Southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Patchy fog before 11am. Otherwise, sunny, with a high near 83. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 83 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Independence Day

    Independence Day: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 78. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tonight
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 57. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, 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.
Wednesday Night
Mostly clear, with a low around 57. Southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Thursday
Patchy fog before 11am. Otherwise, sunny, with a high near 83. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 60.
Independence Day
Mostly sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 62.
Monday
Sunny, with a high near 90.
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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:
2:23 am PDT Jun 30, 2026
Forecast Valid:
4am PDT Jun 30, 2026-6pm PDT Jul 6, 2026
 
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