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Weather Forecast for Fontana

Now
Current Weather Conditions
49° F

Wind: 0 mph
Humidity: 61%
Clouds: 20%
Pressure: 1024 hPa
Sunrise: 10:27 AM ET
Sunset: 9:39 PM ET
Tomorrow
Tomorrow's Weather Conditions
Sunny

Mostly Clear
Tue
Tue's Weather Conditions
Sunny

Mostly Clear


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 12:05 am PST Feb 22, 2026
 
Overnight

Overnight: Mostly clear, with a low around 48. North wind around 5 mph.
Low: 48 °F
Sunday

Sunday: Sunny, with a high near 74. Calm wind becoming north around 5 mph in the afternoon.
High: 74 °F
Sunday
Night
Sunday Night: Mostly clear, with a low around 51. Light and variable wind becoming north 5 to 10 mph after midnight.
Low: 51 °F
Monday

Monday: Sunny, with a high near 79. North wind 5 to 10 mph becoming light and variable  in the afternoon.
High: 79 °F
Monday
Night
Monday Night: Mostly clear, with a low around 56. Southwest wind around 5 mph becoming calm.
Low: 56 °F
Tuesday

Tuesday: Sunny, with a high near 79.
High: 79 °F
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 57.
Low: 57 °F
Wednesday

Wednesday: Sunny, with a high near 79.
High: 79 °F
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 58.
Low: 58 °F
Mostly Clear
Sunny
Mostly Clear
Sunny
Mostly Clear
Sunny
Partly Cloudy
Sunny
Partly Cloudy


Overnight
 
Mostly clear, with a low around 48. North wind around 5 mph.
Sunday
 
Sunny, with a high near 74. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
 
Mostly clear, with a low around 51. Light and variable wind becoming north 5 to 10 mph after midnight.
Monday
 
Sunny, with a high near 79. North wind 5 to 10 mph becoming light and variable in the afternoon.
Monday Night
 
Mostly clear, with a low around 56. Southwest wind around 5 mph becoming calm.
Tuesday
 
Sunny, with a high near 79.
Tuesday Night
 
Partly cloudy, with a low around 57.
Wednesday
 
Sunny, with a high near 79.
Wednesday Night
 
Partly cloudy, with a low around 58.
Thursday
 
Mostly sunny, with a high near 82.
Thursday Night
 
Partly cloudy, with a low around 60.
Friday
 
Mostly sunny, with a high near 84.
Friday Night
 
Partly cloudy, with a low around 61.
Saturday
 
Mostly sunny, with a high near 84.

Forecast from NOAA-NWS for Fontana.



 


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