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Weather Forecast for Fontana

Now
Current Weather Conditions
58° F

Wind: 0 mph
Humidity: 71%
Clouds: 0%
Pressure: 1016 hPa
Sunrise: 10:09 AM ET
Sunset: 8:56 PM ET
Tomorrow
Tomorrow's Weather Conditions
Sunny

Clear
Mon
Mon's Weather Conditions
Sunny

Partly Cloudy


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 1:55 am PDT Nov 1, 2025
 
Overnight

Overnight: Clear, with a low around 59. Calm wind.
Low: 59 °F
Saturday

Saturday: Sunny, with a high near 87. Calm wind becoming west around 5 mph in the afternoon.
High: 87 °F
Saturday
Night
Saturday Night: Clear, with a low around 60. Southwest wind around 5 mph becoming calm  in the evening.
Low: 60 °F
Sunday

Sunday: Sunny, with a high near 85. Light and variable wind becoming west 5 to 10 mph in the afternoon.
High: 85 °F
Sunday
Night
Sunday Night: Partly cloudy, with a low around 58. West wind around 5 mph becoming calm  in the evening.
Low: 58 °F
Monday

Monday: Sunny, with a high near 82.
High: 82 °F
Monday
Night
Monday Night: Mostly clear, with a low around 55.
Low: 55 °F
Tuesday

Tuesday: Sunny, with a high near 79.
High: 79 °F
Tuesday
Night
Tuesday Night: Mostly clear, with a low around 54.
Low: 54 °F
Clear
Sunny
Clear
Sunny
Partly Cloudy
Sunny
Mostly Clear
Sunny
Mostly Clear


Overnight
 
Clear, with a low around 59. Calm wind.
Saturday
 
Sunny, with a high near 87. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
 
Clear, with a low around 60. Southwest wind around 5 mph becoming calm in the evening.
Sunday
 
Sunny, with a high near 85. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Sunday Night
 
Partly cloudy, with a low around 58. West wind around 5 mph becoming calm in the evening.
Monday
 
Sunny, with a high near 82.
Monday Night
 
Mostly clear, with a low around 55.
Tuesday
 
Sunny, with a high near 79.
Tuesday Night
 
Mostly clear, with a low around 54.
Wednesday
 
Sunny, with a high near 75.
Wednesday Night
 
Mostly clear, with a low around 54.
Thursday
 
Sunny, with a high near 76.
Thursday Night
 
Mostly clear, with a low around 55.
Friday
 
Sunny, with a high near 82.

Forecast from NOAA-NWS for Fontana.



 


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