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

97°F

36°C

Humidity 15%
Wind Speed WSW 3 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Heat Index93°F (34°C)
Last update 19 Mar 02:00 PM PDT
Extended Forecast for

4 Miles SSW Fontana CA

Heat Advisory March 19, 03:26pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 19, 03:26pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 66 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 100. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 100 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 65. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.

    Low: 65 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 93. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 62. Southwest wind 5 to 10 mph becoming light west in the evening. Winds could gust as high as 20 mph.

    Low: 62 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 66. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Friday
Sunny, with a high near 100. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Clear, with a low around 65. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 93. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 62. Southwest wind 5 to 10 mph becoming light west in the evening. Winds could gust as high as 20 mph.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 63.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Fontana CA
 34.05°N 117.47°W (Elev. 951 ft)
Last Update:
11:14 am PDT Mar 19, 2026
Forecast Valid:
3pm PDT Mar 19, 2026-6pm PDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

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