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

75°F

24°C

Humidity 63%
Wind Speed WSW 3 MPH
Barometer NA
Dewpoint 62°F (17°C)
Visibility NA
Last update 03 Aug 12:00 AM PDT
Extended Forecast for

4 Miles WSW Colton CA

Extreme Heat Warning August 3, 01:57am until August 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 3, 01:57am until August 3, 08:00pm

    NOW until 8:00pm Mon

    Extreme Heat Warning

  • Overnight

    Low: 70 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 100. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 100 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 69. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 69 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 100. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 100 °F

    Sunny

  • Tuesday Night

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

    Low: 68 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 99.

    High: 99 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 69.

    Low: 69 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 100.

    High: 100 °F

    Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 70. Southwest wind around 5 mph becoming calm.
Monday
Sunny, with a high near 100. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Clear, with a low around 69. West 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 100. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Clear, with a low around 68. West wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 99.
Wednesday Night
Clear, with a low around 69.
Thursday
Sunny, with a high near 100.
Thursday Night
Mostly clear, with a low around 70.
Friday
Sunny, with a high near 101.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 100.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Sunny, with a high near 98.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Colton CA
 34.04°N 117.39°W (Elev. 951 ft)
Last Update:
2:16 pm PDT Aug 2, 2026
Forecast Valid:
1am PDT Aug 3, 2026-6pm PDT Aug 9, 2026
 
Forecast Discussion
 
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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