National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Fontana-Arrow Highway (CQ057)

Lat: 34.10056°NLon: 117.49222°WElev: 1191.0ft.

NA

76°F

24°C

Humidity 42%
Wind Speed WSW 5 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Heat Index78°F (26°C)
Last update 13 May 03:00 PM PDT
Extended Forecast for

Fontana CA

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, increasing clouds, with a low around 55. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 80. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 82. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 55. West wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 80. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 56. West wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 82. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Partly cloudy, with a low around 57. West wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 81.
Monday Night
Clear, with a low around 58.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fontana CA
 34.1°N 117.43°W (Elev. 1296 ft)
Last Update:
12:07 pm PDT May 13, 2026
Forecast Valid:
4pm PDT May 13, 2026-6pm PDT May 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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