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

104°F

40°C

Humidity 22%
Wind Speed WSW 6 MPH
Barometer NA
Dewpoint 58°F (14°C)
Visibility NA
Heat Index104°F (40°C)
Last update 28 Aug 02:00 PM PDT
Extended Forecast for

2 Miles ESE Fontana CA

Extreme Heat Warning August 28, 03:39pm until August 29, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 28, 03:39pm until August 29, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 73 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 99. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 99 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 70. Southwest wind 10 to 15 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 95. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 66. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 66 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Monday Night

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

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

Tonight
Clear, with a low around 73. Southwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 99. 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 70. Southwest wind 10 to 15 mph becoming light in the evening. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 95. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Clear, with a low around 66. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 67.
Wednesday
A slight chance of showers before 11am. Mostly sunny, with a high near 90.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Fontana CA
 34.1°N 117.43°W (Elev. 1296 ft)
Last Update:
2:47 pm PDT Aug 28, 2026
Forecast Valid:
3pm PDT Aug 28, 2026-6pm PDT Sep 4, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation