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Weather Forecast for Fontana

Now
Current Weather Conditions
86° F

Wind: 13.8 mph
Humidity: 35%
Clouds: 0%
Pressure: 1010 hPa
Sunrise: 8:41 AM ET
Sunset: 11:05 PM ET
Tomorrow
Tomorrow's Weather Conditions
Sunny

Mostly Clear
Thu
Thu's Weather Conditions
Sunny

Mostly Clear


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 1:02 pm PDT Jun 30, 2025
 
Tonight

Tonight: Mostly clear, with a low around 62. West wind 10 to 15 mph becoming light southwest  after midnight. Winds could gust as high as 25 mph.
Low: 62 °F
Tuesday

Tuesday: Sunny, with a high near 91. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
High: 91 °F
Tuesday
Night
Tuesday Night: Mostly clear, with a low around 62. West wind 5 to 10 mph becoming light southwest  after midnight. Winds could gust as high as 20 mph.
Low: 62 °F
Wednesday

Wednesday: Sunny, with a high near 88. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
High: 88 °F
Wednesday
Night
Wednesday Night: Mostly clear, with a low around 61. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Low: 61 °F
Thursday

Thursday: Sunny, with a high near 87.
High: 87 °F
Thursday
Night
Thursday Night: Mostly clear, with a low around 61.
Low: 61 °F
Independence
Day
Independence Day: Sunny, with a high near 89.
High: 89 °F
Friday
Night
Friday Night: Mostly clear, with a low around 61.
Low: 61 °F
Mostly Clear
Sunny
Mostly Clear
Sunny
Mostly Clear
Sunny
Mostly Clear
Sunny
Mostly Clear

Air Quality Alert


Tonight
 
Mostly clear, with a low around 62. West wind 10 to 15 mph becoming light southwest after midnight. Winds could gust as high as 25 mph.
Tuesday
 
Sunny, with a high near 91. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
 
Mostly clear, with a low around 62. West wind 5 to 10 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.
Wednesday
 
Sunny, with a high near 88. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
 
Mostly clear, with a low around 61. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Thursday
 
Sunny, with a high near 87.
Thursday Night
 
Mostly clear, with a low around 61.
Independence Day
 
Sunny, with a high near 89.
Friday Night
 
Mostly clear, with a low around 61.
Saturday
 
Sunny, with a high near 91.
Saturday Night
 
Mostly clear, with a low around 62.
Sunday
 
Sunny, with a high near 92.
Sunday Night
 
Mostly clear, with a low around 63.
Monday
 
Sunny, with a high near 92.

Forecast from NOAA-NWS for Fontana.



 


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