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

78°F

26°C

Humidity 42%
Wind Speed W 2 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Heat Index79°F (26°C)
Last update 08 Aug 12:00 AM PDT
Extended Forecast for

3 Miles SSE Fontana CA

Heat Advisory August 8, 01:20am until August 9, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 8, 01:20am until August 9, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • Overnight

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 100. Light south wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 100 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 70. Southwest wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 20 mph.

    Low: 70 °F

    Clear

  • Sunday

    Sunday: 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 25 mph.

    High: 100 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 69. West wind 5 to 10 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 94.

    High: 94 °F

    Partly Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 68. Southwest wind around 5 mph.
Saturday
Sunny, with a high near 100. Light south 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 70. Southwest wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 20 mph.
Sunday
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 25 mph.
Sunday Night
Mostly clear, with a low around 69. West wind 5 to 10 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 96.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Partly sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 62.
Friday
Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Fontana CA
 34.05°N 117.45°W (Elev. 1047 ft)
Last Update:
11:57 pm PDT Aug 7, 2026
Forecast Valid:
1am PDT Aug 8, 2026-6pm PDT Aug 14, 2026
 
Forecast Discussion
 
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Additional Resources

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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