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

Hazardous Weather Conditions

Current conditions at

Fontana-Arrow Highway (CQ057)

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

NA

65°F

18°C

Humidity 30%
Wind Speed N 3 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 13 Mar 02:00 AM PDT
Extended Forecast for

4 Miles E Ontario International Arpt CA

Heat Advisory March 13, 03:36am until March 13, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 13, 03:36am until March 13, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Overnight

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. Southwest wind 5 to 10 mph becoming light and variable in the evening.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 84. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 58. West wind 5 to 10 mph becoming light southwest after midnight.

    Low: 58 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 61. Calm wind becoming north around 5 mph.
Friday
Sunny, with a high near 92. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 61. Southwest wind 5 to 10 mph becoming light and variable in the evening.
Saturday
Mostly sunny, with a high near 84. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Clear, with a low around 58. West wind 5 to 10 mph becoming light southwest after midnight.
Sunday
Sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Sunny, with a high near 98.
Tuesday Night
Clear, with a low around 68.
Wednesday
Sunny, with a high near 100.
Wednesday Night
Clear, with a low around 67.
Thursday
Sunny, with a high near 101.
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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:
12:24 am PDT Mar 13, 2026
Forecast Valid:
3am PDT Mar 13, 2026-6pm PDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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