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

70°F

21°C

Humidity 60%
Wind Speed SSW 4 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 02 Sep 09:20 AM PDT
Extended Forecast for

3 Miles SSE Rancho Cucamonga CA

  • Today

    Today: Sunny, with a high near 86. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 60. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.

    Low: 60 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 60. Southwest wind 5 to 10 mph becoming south after midnight. Winds could gust as high as 20 mph.

    Low: 60 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 86. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers after 11am. Mostly sunny, with a high near 89. Chance of precipitation is 20%.

    High: 89 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers, mainly after 11pm. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 86. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
Clear, with a low around 60. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 85. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Clear, with a low around 60. Southwest wind 5 to 10 mph becoming south after midnight. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 86. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 64.
Saturday
A slight chance of showers after 11am. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
Saturday Night
A chance of showers, mainly after 11pm. Mostly cloudy, with a low around 68.
Sunday
A chance of showers. Partly sunny, with a high near 88.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 69.
Labor Day
A slight chance of showers. Mostly sunny, with a high near 88.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 68.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 89.
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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:
1:15 am PDT Sep 2, 2026
Forecast Valid:
9am PDT Sep 2, 2026-6pm PDT Sep 8, 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