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.

Partly Cloudy

74°F

23°C

Humidity 46%
Wind Speed WSW 11 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 24 May 05:53 PM PDT
Extended Forecast for

3 Miles SSE Rancho Cucamonga CA

  • Tonight

    Tonight: Increasing clouds, with a low around 56. West wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 56 °F

    Increasing
    Clouds

  • Memorial Day

    Memorial Day: Cloudy through mid morning, then gradual clearing, with a high near 77. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 77 °F

    Gradual
    Clearing

  • Monday Night

    Monday Night: Patchy drizzle after 11pm. Increasing clouds, with a low around 55. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Patchy
    Drizzle

  • Tuesday

    Tuesday: Patchy drizzle before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 71. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 71 °F

    Patchy
    Drizzle then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Patchy drizzle after 11pm. Increasing clouds, with a low around 54. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Patchy
    Drizzle

  • Wednesday

    Wednesday: Patchy drizzle before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 69.

    High: 69 °F

    Patchy
    Drizzle then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 56. West wind 5 to 15 mph, with gusts as high as 25 mph.
Memorial Day
Cloudy through mid morning, then gradual clearing, with a high near 77. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Monday Night
Patchy drizzle after 11pm. Increasing clouds, with a low around 55. West wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday
Patchy drizzle before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 71. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Patchy drizzle after 11pm. Increasing clouds, with a low around 54. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Wednesday
Patchy drizzle before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 53.
Friday
Sunny, with a high near 77.
Friday Night
Clear, with a low around 56.
Saturday
Sunny, with a high near 82.
Saturday Night
Clear, with a low around 58.
Sunday
Sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Rancho Cucamonga CA
 34.09°N 117.53°W (Elev. 1106 ft)
Last Update:
12:44 pm PDT May 24, 2026
Forecast Valid:
6pm PDT May 24, 2026-6pm PDT May 31, 2026
 
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