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Weather Forecast for Fontana

Now
Current Weather Conditions
69° F

Wind: 3.44 mph
Humidity: 37%
Clouds: 0%
Pressure: 1017 hPa
Sunrise: 10:35 AM ET
Sunset: 8:41 PM ET
Tomorrow
Tomorrow's Weather Conditions
Mostly Clear

Sunny
Sun
Sun's Weather Conditions
Mostly Clear

Sunny


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 2:28 am PST Nov 28, 2025
 
Today

Today: Sunny, with a high near 73. Calm wind becoming southwest around 5 mph in the afternoon.
High: 73 °F
Tonight

Tonight: Mostly clear, with a low around 49. West wind around 5 mph becoming calm  in the evening.
Low: 49 °F
Saturday

Saturday: Sunny, with a high near 72. Calm wind becoming north around 5 mph in the afternoon.
High: 72 °F
Saturday
Night
Saturday Night: Mostly clear, with a low around 48. Northwest wind around 5 mph becoming calm.
Low: 48 °F
Sunday

Sunday: Sunny, with a high near 69. Calm wind becoming southwest around 5 mph in the afternoon.
High: 69 °F
Sunday
Night
Sunday Night: Mostly clear, with a low around 48.
Low: 48 °F
Monday

Monday: Sunny, with a high near 71.
High: 71 °F
Monday
Night
Monday Night: Mostly clear, with a low around 48.
Low: 48 °F
Tuesday

Tuesday: Sunny, with a high near 68.
High: 68 °F
Sunny
Mostly Clear
Sunny
Mostly Clear
Sunny
Mostly Clear
Sunny
Mostly Clear
Sunny

Air Quality Alert


Today
 
Sunny, with a high near 73. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
 
Mostly clear, with a low around 49. West wind around 5 mph becoming calm in the evening.
Saturday
 
Sunny, with a high near 72. Calm wind becoming north around 5 mph in the afternoon.
Saturday Night
 
Mostly clear, with a low around 48. Northwest wind around 5 mph becoming calm.
Sunday
 
Sunny, with a high near 69. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
 
Mostly clear, with a low around 48.
Monday
 
Sunny, with a high near 71.
Monday Night
 
Mostly clear, with a low around 48.
Tuesday
 
Sunny, with a high near 68.
Tuesday Night
 
Partly cloudy, with a low around 48.
Wednesday
 
A slight chance of showers. Mostly sunny, with a high near 64.
Wednesday Night
 
A slight chance of showers. Partly cloudy, with a low around 46.
Thursday
 
Sunny, with a high near 65.

Forecast from NOAA-NWS for Fontana.



 


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