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

90°F

32°C

Humidity 34%
Wind Speed WSW 6 MPH
Barometer NA
Dewpoint 58°F (14°C)
Visibility NA
Heat Index89°F (32°C)
Last update 16 Jun 07:00 PM PDT
Extended Forecast for

Fontana CA

Heat Advisory until June 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until June 18, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Tonight

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 97. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 97 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 96. Light southwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 96 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 63. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Thursday Night

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

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 65. Southwest wind 5 to 10 mph becoming light in the evening.
Tuesday
Sunny, with a high near 97. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 66. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 96. Light southwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 63. West wind 5 to 15 mph, with gusts as high as 20 mph.
Juneteenth
Sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 60.
Saturday
Patchy fog before 11am. Otherwise, sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Patchy fog. Otherwise, sunny, with a high near 85.
Sunday Night
Mostly clear, with a low around 60.
Monday
Patchy fog. Otherwise, sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fontana CA
 34.1°N 117.43°W (Elev. 1296 ft)
Last Update:
12:59 pm PDT Jun 16, 2025
Forecast Valid:
8pm PDT Jun 16, 2025-6pm PDT Jun 23, 2025
 
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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