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

68°F

20°C

Humidity 83%
Wind Speed ENE 0 MPH
Barometer NA
Dewpoint 62°F (17°C)
Visibility NA
Last update 19 Aug 04:00 AM PDT
Extended Forecast for

3 Miles NNE Fontana CA

Extreme Heat Watch August 21, 10:00am until August 23, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Today

    Today: Sunny, with a high near 93. Light southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 66. Southwest wind 5 to 10 mph becoming light and variable in the evening.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 96. Light and variable wind becoming southwest 10 to 15 mph in the morning.

    High: 96 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 71. Southwest wind 5 to 10 mph becoming light west in the evening.

    Low: 71 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 100. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 100 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms after 11am. Sunny, with a high near 100. Chance of precipitation is 20%.

    High: 100 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 98.

    High: 98 °F

    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 93. Light southwest wind increasing to 5 to 10 mph in the afternoon.
Tonight
Mostly clear, with a low around 66. Southwest wind 5 to 10 mph becoming light and variable in the evening.
Wednesday
Sunny, with a high near 96. Light and variable wind becoming southwest 10 to 15 mph in the morning.
Wednesday Night
Mostly clear, with a low around 71. Southwest wind 5 to 10 mph becoming light west in the evening.
Thursday
Sunny, with a high near 100. Light southwest wind increasing to 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 73.
Friday
A slight chance of showers and thunderstorms after 11am. Sunny, with a high near 100. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 73.
Saturday
A chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 98.
Saturday Night
A slight chance of showers and thunderstorms before 11pm. Mostly clear, with a low around 73.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 98.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Fontana CA
 34.14°N 117.44°W (Elev. 1614 ft)
Last Update:
2:51 am PDT Aug 19, 2025
Forecast Valid:
5am PDT Aug 19, 2025-6pm PDT Aug 25, 2025
 
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