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Weather Forecast for Fontana

Now
Current Weather Conditions
68° F

Wind: 9.22 mph
Humidity: 71%
Clouds: 0%
Pressure: 1014 hPa
Sunrise: 8:42 AM ET
Sunset: 11:04 PM ET
Tomorrow
Tomorrow's Weather Conditions
Patchy Fog
then Sunny

Clear

Sun
Sun's Weather Conditions
Sunny


Clear



Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 6:24 pm PDT Jul 3, 2025
 
Tonight

Tonight: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 61. West wind around 5 mph becoming calm  after midnight.
Low: 61 °F
Independence
Day
Independence Day: Patchy fog before 8am.  Otherwise, sunny, with a high near 90. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
High: 90 °F
Friday
Night
Friday Night: Clear, with a low around 63. Southwest wind 5 to 10 mph becoming light and variable  in the evening.
Low: 63 °F
Saturday

Saturday: Sunny, with a high near 92. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
High: 92 °F
Saturday
Night
Saturday Night: Clear, with a low around 63. Southwest wind 5 to 10 mph becoming light and variable  in the evening.
Low: 63 °F
Sunday

Sunday: Sunny, with a high near 93.
High: 93 °F
Sunday
Night
Sunday Night: Mostly clear, with a low around 64.
Low: 64 °F
Monday

Monday: Sunny, with a high near 94.
High: 94 °F
Monday
Night
Monday Night: Mostly clear, with a low around 67.
Low: 67 °F
Mostly Clear
then Patchy
Fog
Patchy Fog
then Sunny
Clear

Sunny

Clear

Sunny

Mostly Clear

Sunny

Mostly Clear

Air Quality Alert


Tonight
 
Patchy fog after 5am. Otherwise, mostly clear, with a low around 61. West wind around 5 mph becoming calm after midnight.
Independence Day
 
Patchy fog before 8am. Otherwise, sunny, with a high near 90. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
 
Clear, with a low around 63. Southwest wind 5 to 10 mph becoming light and variable in the evening.
Saturday
 
Sunny, with a high near 92. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Saturday Night
 
Clear, with a low around 63. Southwest wind 5 to 10 mph becoming light and variable in the evening.
Sunday
 
Sunny, with a high near 93.
Sunday Night
 
Mostly clear, with a low around 64.
Monday
 
Sunny, with a high near 94.
Monday Night
 
Mostly clear, with a low around 67.
Tuesday
 
Sunny, with a high near 98.
Tuesday Night
 
Mostly clear, with a low around 71.
Wednesday
 
Sunny, with a high near 101.
Wednesday Night
 
Mostly clear, with a low around 74.
Thursday
 
Sunny, with a high near 100.

Forecast from NOAA-NWS for Fontana.



 


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