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

95°F

35°C

Humidity 21%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Heat Index92°F (33°C)
Last update 22 Aug 12:00 PM PDT
Extended Forecast for

2 Miles S Fontana CA

Extreme Heat Watch August 25, 10:00am until August 28, 08:00pm
Heat Advisory August 22, 01:27pm until August 25, 10:00am
Click here for hazard details and duration
Extreme Heat Watch
Heat Advisory
  •  
    Heat Advisory August 22, 01:27pm until August 25, 10:00am

    NOW until 10:00am Tue

    Heat Advisory

  • This Afternoon

    High: 102 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 71. Southwest wind 5 to 10 mph becoming light and variable in the evening.

    Low: 71 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 102. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 102 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 72. Southwest wind 5 to 10 mph becoming light and variable in the evening.

    Low: 72 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 102. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 102 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 72.

    Low: 72 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 103.

    High: 103 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 73.

    Low: 73 °F

    Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 102. West wind 5 to 10 mph.
Tonight
Clear, with a low around 71. Southwest wind 5 to 10 mph becoming light and variable in the evening.
Sunday
Sunny, with a high near 102. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Clear, with a low around 72. Southwest wind 5 to 10 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 102. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Clear, with a low around 72.
Tuesday
Sunny, with a high near 103.
Tuesday Night
Clear, with a low around 73.
Wednesday
Sunny, with a high near 103.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
Sunny, with a high near 103.
Thursday Night
Partly cloudy, with a low around 73.
Friday
Mostly sunny, with a high near 103.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Fontana CA
 34.07°N 117.48°W (Elev. 1070 ft)
Last Update:
11:45 pm PDT Aug 21, 2026
Forecast Valid:
1pm PDT Aug 22, 2026-6pm PDT Aug 28, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

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Chance of Precipitation