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

75°F

24°C

Humidity 65%
Wind Speed WSW 6 MPH
Barometer NA
Dewpoint 62°F (17°C)
Visibility NA
Last update 12 Aug 09:00 PM PDT
Extended Forecast for

Fontana CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 64. Southwest wind around 5 mph.

    Low: 64 °F

    Mostly Cloudy

  • Thursday

    Thursday: Patchy dense fog before 11am. Otherwise, mostly cloudy, with a high near 86. Light south wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 86 °F

    Patchy Dense
    Fog then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Cloudy, with a low around 63. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Cloudy

  • Friday

    Friday: Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 86. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 86 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Clear, with a low around 62. Southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.

    Low: 62 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 64. Southwest wind around 5 mph.
Thursday
Patchy dense fog before 11am. Otherwise, mostly cloudy, with a high near 86. Light south wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Cloudy, with a low around 63. West wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 86. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Clear, with a low around 62. Southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 65.
Monday
Mostly sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Sunny, with a high near 93.
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:
12:36 pm PDT Aug 12, 2026
Forecast Valid:
10pm PDT Aug 12, 2026-6pm PDT Aug 19, 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