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

88°F

31°C

Humidity 35%
Wind Speed WSW 7 MPH
Barometer NA
Dewpoint 57°F (14°C)
Visibility NA
Heat Index87°F (31°C)
Last update 02 Aug 08:00 PM PDT
Extended Forecast for

3 Miles N Fontana CA

Extreme Heat Warning August 2, 09:17pm until August 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 2, 09:17pm until August 3, 08:00pm

    NOW until 8:00pm Mon

    Extreme Heat Warning

  • Tonight

    Low: 70 °F

    Mostly Clear

  • Monday

    Monday: 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 25 mph.

    High: 99 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 98. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 98 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 68. Southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.

    Low: 68 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 97.

    High: 97 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 69.

    Low: 69 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 98.

    High: 98 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 70. Southwest wind around 5 mph becoming calm after midnight.
Monday
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 25 mph.
Monday Night
Mostly clear, with a low around 68. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 98. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 25 mph.
Tuesday Night
Clear, with a low around 68. Southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 97.
Wednesday Night
Clear, with a low around 69.
Thursday
Sunny, with a high near 98.
Thursday Night
Mostly clear, with a low around 70.
Friday
Sunny, with a high near 99.
Friday Night
Mostly clear, with a low around 71.
Saturday
Sunny, with a high near 99.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Sunny, with a high near 97.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Fontana CA
 34.14°N 117.46°W (Elev. 1490 ft)
Last Update:
2:16 pm PDT Aug 2, 2026
Forecast Valid:
9pm PDT Aug 2, 2026-6pm PDT Aug 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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