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Weather Forecast for Fontana

Now
Current Weather Conditions
62° F

Wind: 10.36 mph
Humidity: 71%
Clouds: 75%
Pressure: 1013 hPa
Sunrise: 8:59 AM ET
Sunset: 10:33 PM ET
Tomorrow
Tomorrow's Weather Conditions
Patchy Fog
then Sunny

Increasing
Clouds
Sun
Sun's Weather Conditions
Decreasing
Clouds

Chance
Showers


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 1:54 pm PDT May 1, 2025
 
Tonight

Tonight: Patchy fog after 2am.  Otherwise, increasing clouds, with a low around 53. Southwest wind 5 to 10 mph.
Low: 53 °F
Friday

Friday: Patchy fog before 11am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 77. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
High: 77 °F
Friday
Night
Friday Night: Increasing clouds, with a low around 53. Southwest wind 5 to 10 mph becoming light  after midnight. Winds could gust as high as 20 mph.
Low: 53 °F
Saturday

Saturday: Cloudy, then gradually becoming mostly sunny, with a high near 72. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
High: 72 °F
Saturday
Night
Saturday Night: A chance of showers.  Increasing clouds, with a low around 50. West wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Low: 50 °F
Sunday

Sunday: A chance of showers, with thunderstorms also possible after 11am.  Cloudy, with a high near 61. Chance of precipitation is 30%.
High: 61 °F
Sunday
Night
Sunday Night: A chance of showers.  Cloudy, with a low around 51. Chance of precipitation is 30%.
Low: 51 °F
Monday

Monday: A chance of showers.  Cloudy, with a high near 61.
High: 61 °F
Monday
Night
Monday Night: A slight chance of showers.  Mostly cloudy, with a low around 51.
Low: 51 °F
Mostly Clear
then Patchy
Fog
Patchy Fog
then Sunny
Increasing
Clouds
Decreasing
Clouds
Chance
Showers
Chance
Showers
Chance
Showers
Chance
Showers
Slight Chance
Showers


Tonight
 
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 53. Southwest wind 5 to 10 mph.
Friday
 
Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 77. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
 
Increasing clouds, with a low around 53. Southwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Saturday
 
Cloudy, then gradually becoming mostly sunny, with a high near 72. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
 
A chance of showers. Increasing clouds, with a low around 50. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
 
A chance of showers, with thunderstorms also possible after 11am. Cloudy, with a high near 61. Chance of precipitation is 30%.
Sunday Night
 
A chance of showers. Cloudy, with a low around 51. Chance of precipitation is 30%.
Monday
 
A chance of showers. Cloudy, with a high near 61.
Monday Night
 
A slight chance of showers. Mostly cloudy, with a low around 51.
Tuesday
 
A slight chance of showers. Mostly cloudy, then gradually becoming sunny, with a high near 71.
Tuesday Night
 
Mostly clear, with a low around 52.
Wednesday
 
Sunny, with a high near 77.
Wednesday Night
 
Mostly clear, with a low around 56.
Thursday
 
Sunny, with a high near 82.

Forecast from NOAA-NWS for Fontana.



 


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