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Weather Forecast for Fontana

Now
Current Weather Conditions
61° F

Wind: 4.12 mph
Humidity: 74%
Clouds: 100%
Pressure: 1014 hPa
Sunrise: 8:46 AM ET
Sunset: 10:45 PM ET
Tomorrow
Tomorrow's Weather Conditions
Mostly Cloudy


Decreasing
Clouds
Mon
Mon's Weather Conditions
Partly Cloudy


Sunny and
Breezy then
Sunny


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 1:22 am PDT May 17, 2025
 
This
Afternoon
This Afternoon: Cloudy early, then becoming mostly sunny, with a high near 65. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
High: 65 °F
Tonight

Tonight: Mostly cloudy, with a low around 53. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Low: 53 °F
Sunday

Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 72. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
High: 72 °F
Sunday
Night
Sunday Night: Partly cloudy, with a low around 54. Southwest wind 10 to 15 mph becoming southwest 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Low: 54 °F
Monday

Monday: Sunny, with a high near 83. Breezy, with a north wind 15 to 25 mph, with gusts as high as 35 mph.
High: 83 °F
Monday
Night
Monday Night: Mostly clear, with a low around 58.
Low: 58 °F
Tuesday

Tuesday: Sunny, with a high near 91.
High: 91 °F
Tuesday
Night
Tuesday Night: Mostly clear, with a low around 64.
Low: 64 °F
Wednesday

Wednesday: Sunny, with a high near 95.
High: 95 °F
Mostly Sunny

Mostly Cloudy

Decreasing
Clouds
Partly Cloudy

Sunny and
Breezy then
Sunny
Mostly Clear

Sunny

Mostly Clear

Sunny


This Afternoon
 
Cloudy early, then becoming mostly sunny, with a high near 65. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tonight
 
Mostly cloudy, with a low around 53. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Sunday
 
Mostly cloudy, then gradually becoming sunny, with a high near 72. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
 
Partly cloudy, with a low around 54. Southwest wind 10 to 15 mph becoming southwest 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Monday
 
Sunny, with a high near 83. Breezy, with a north wind 15 to 25 mph, with gusts as high as 35 mph.
Monday Night
 
Mostly clear, with a low around 58.
Tuesday
 
Sunny, with a high near 91.
Tuesday Night
 
Mostly clear, with a low around 64.
Wednesday
 
Sunny, with a high near 95.
Wednesday Night
 
Mostly clear, with a low around 65.
Thursday
 
Sunny, with a high near 94.
Thursday Night
 
Partly cloudy, with a low around 64.
Friday
 
Mostly sunny, with a high near 88.

Forecast from NOAA-NWS for Fontana.



 


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