National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Fontana-Arrow Highway (CQ057)

Lat: 34.10056°NLon: 117.49222°WElev: 1191.0ft.

NA

58°F

14°C

Humidity 62%
Wind Speed NE 2 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 11 Nov 03:00 AM PST
Extended Forecast for

4 Miles E Ontario International Arpt CA

  • Veterans Day

    Veterans Day: Sunny, with a high near 85. Calm wind becoming west around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 59. Calm wind becoming east around 5 mph.

    Low: 59 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers after 10pm. Partly cloudy, with a low around 60. Calm wind becoming north around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after 10am. Mostly cloudy, with a high near 70. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 70 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers. The rain could be heavy at times. Low around 57. Chance of precipitation is 90%.

    Low: 57 °F

    Heavy Rain

  • Saturday

    Saturday: Showers likely, mainly before 10am. Partly sunny, with a high near 67. Chance of precipitation is 60%.

    High: 67 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

Detailed Forecast

Veterans Day
Sunny, with a high near 85. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Clear, with a low around 59. Calm wind becoming east around 5 mph.
Thursday
Sunny, with a high near 81. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Thursday Night
A chance of showers after 10pm. Partly cloudy, with a low around 60. Calm wind becoming north around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely, mainly after 10am. Mostly cloudy, with a high near 70. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers. The rain could be heavy at times. Low around 57. Chance of precipitation is 90%.
Saturday
Showers likely, mainly before 10am. Partly sunny, with a high near 67. Chance of precipitation is 60%.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Sunny, with a high near 69.
Sunday Night
A chance of showers after 4am. Partly cloudy, with a low around 53.
Monday
Showers likely. Mostly cloudy, with a high near 66.
Monday Night
Showers likely. Mostly cloudy, with a low around 50.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Ontario International Arpt CA
 34.06°N 117.53°W (Elev. 981 ft)
Last Update:
12:13 am PST Nov 11, 2026
Forecast Valid:
4am PST Nov 11, 2026-6pm PST Nov 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation