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Weather Forecast for Fontana

Now
Current Weather Conditions
55° F

Wind: 3.44 mph
Humidity: 44%
Clouds: 0%
Pressure: 1018 hPa
Sunrise: 10:41 AM ET
Sunset: 8:40 PM ET
Tomorrow
Tomorrow's Weather Conditions
Sunny

Clear
Mon
Mon's Weather Conditions
Sunny

Mostly Clear


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 7:42 pm PST Dec 5, 2025
 
Tonight

Tonight: Clear, with a low around 49. Northwest wind around 5 mph becoming northeast in the evening.
Low: 49 °F
Saturday

Saturday: Sunny, with a high near 71. Calm wind becoming southwest around 5 mph.
High: 71 °F
Saturday
Night
Saturday Night: Clear, with a low around 48. Calm wind becoming north around 5 mph.
Low: 48 °F
Sunday

Sunday: Sunny, with a high near 75. Northeast wind around 5 mph becoming calm.
High: 75 °F
Sunday
Night
Sunday Night: Mostly clear, with a low around 51. North wind around 5 mph.
Low: 51 °F
Monday

Monday: Sunny, with a high near 78.
High: 78 °F
Monday
Night
Monday Night: Clear, with a low around 53.
Low: 53 °F
Tuesday

Tuesday: Sunny, with a high near 81.
High: 81 °F
Tuesday
Night
Tuesday Night: Mostly clear, with a low around 55.
Low: 55 °F
Clear
Sunny
Clear
Sunny
Mostly Clear
Sunny
Clear
Sunny
Mostly Clear

Air Quality Alert


Tonight
 
Clear, with a low around 49. Northwest wind around 5 mph becoming northeast in the evening.
Saturday
 
Sunny, with a high near 71. Calm wind becoming southwest around 5 mph.
Saturday Night
 
Clear, with a low around 48. Calm wind becoming north around 5 mph.
Sunday
 
Sunny, with a high near 75. Northeast wind around 5 mph becoming calm.
Sunday Night
 
Mostly clear, with a low around 51. North wind around 5 mph.
Monday
 
Sunny, with a high near 78.
Monday Night
 
Clear, with a low around 53.
Tuesday
 
Sunny, with a high near 81.
Tuesday Night
 
Mostly clear, with a low around 55.
Wednesday
 
Sunny, with a high near 82.
Wednesday Night
 
Clear, with a low around 55.
Thursday
 
Sunny, with a high near 80.
Thursday Night
 
Clear, with a low around 55.
Friday
 
Sunny, with a high near 80.

Forecast from NOAA-NWS for Fontana.



 


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