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Weather Forecast for Fontana

Now
Current Weather Conditions
57° F

Wind: 2.15 mph
Humidity: 55%
Clouds: 0%
Pressure: 1016 hPa
Sunrise: 10:14 AM ET
Sunset: 9:48 PM ET
Tomorrow
Tomorrow's Weather Conditions
Mostly Clear


Sunny and
Windy

Fri
Fri's Weather Conditions
Clear


Patchy
Blowing Dust
and Breezy


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 1:36 am PST Mar 4, 2026
 
Today

Today: Sunny, with a high near 75. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
High: 75 °F
Tonight

Tonight: Mostly clear, with a low around 50. Southwest wind around 5 mph becoming calm  in the evening.
Low: 50 °F
Thursday

Thursday: Sunny, with a high near 72. Windy, with a north wind 20 to 30 mph, with gusts as high as 45 mph.
High: 72 °F
Thursday
Night
Thursday Night: Clear, with a low around 49. North wind 15 to 20 mph, with gusts as high as 35 mph.
Low: 49 °F
Friday

Friday: Patchy blowing dust. Sunny, with a high near 71. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph.
High: 71 °F
Friday
Night
Friday Night: Mostly clear, with a low around 52. Breezy.
Low: 52 °F
Saturday

Saturday: Patchy blowing dust. Sunny, with a high near 74. Windy.
High: 74 °F
Saturday
Night
Saturday Night: Patchy blowing dust. Mostly clear, with a low around 55. Breezy.
Low: 55 °F
Sunday

Sunday: Sunny, with a high near 77. Breezy.
High: 77 °F
Sunny

Mostly Clear

Sunny and
Windy

Clear

Patchy
Blowing Dust
and Breezy
Mostly Clear
then Mostly
Clear and
Breezy
Patchy
Blowing Dust
and Windy
Patchy
Blowing Dust
and Breezy
Sunny and
Breezy


Today
 
Sunny, with a high near 75. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
 
Mostly clear, with a low around 50. Southwest wind around 5 mph becoming calm in the evening.
Thursday
 
Sunny, with a high near 72. Windy, with a north wind 20 to 30 mph, with gusts as high as 45 mph.
Thursday Night
 
Clear, with a low around 49. North wind 15 to 20 mph, with gusts as high as 35 mph.
Friday
 
Patchy blowing dust. Sunny, with a high near 71. Breezy, with a north wind 20 to 25 mph, with gusts as high as 40 mph.
Friday Night
 
Mostly clear, with a low around 52. Breezy.
Saturday
 
Patchy blowing dust. Sunny, with a high near 74. Windy.
Saturday Night
 
Patchy blowing dust. Mostly clear, with a low around 55. Breezy.
Sunday
 
Sunny, with a high near 77. Breezy.
Sunday Night
 
Partly cloudy, with a low around 54.
Monday
 
Mostly sunny, with a high near 76.
Monday Night
 
Mostly clear, with a low around 54.
Tuesday
 
Mostly sunny, with a high near 75.

Forecast from NOAA-NWS for Fontana.



 


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