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

5 Miles S Fontana CA

Heat Advisory March 13, 03:32am until March 13, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 13, 03:32am until March 13, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Overnight

    Low: 62 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 90. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. West 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 82. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59. West wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 88. Breezy.

    High: 88 °F

    Sunny and
    Breezy then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

Overnight
Clear, with a low around 62. Northeast wind around 10 mph.
Friday
Sunny, with a high near 90. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 61. West wind 5 to 10 mph becoming light and variable in the evening.
Saturday
Mostly sunny, with a high near 82. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Clear, with a low around 59. West wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.
Sunday
Sunny, with a high near 88. Breezy.
Sunday Night
Mostly clear, with a low around 65.
Monday
Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Sunny, with a high near 96.
Tuesday Night
Clear, with a low around 69.
Wednesday
Sunny, with a high near 98.
Wednesday Night
Clear, with a low around 69.
Thursday
Sunny, with a high near 99.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Fontana CA
 34.03°N 117.47°W (Elev. 1624 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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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation