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Weather Forecast for Fontana

Now
Current Weather Conditions
54° F

Wind: 3.44 mph
Humidity: 93%
Clouds: 100%
Pressure: 1019 hPa
Sunrise: 10:38 AM ET
Sunset: 9:29 PM ET
Tomorrow
Tomorrow's Weather Conditions
Partly Cloudy

Partly Sunny
Fri
Fri's Weather Conditions
Mostly Cloudy

Sunny


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 2:23 am PST Feb 11, 2026
 
Today

Today: A chance of showers.  Cloudy, then gradually becoming mostly sunny, with a high near 61. Southeast wind 5 to 10 mph becoming southwest in the afternoon.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
High: 61 °F
Tonight

Tonight: Partly cloudy, with a low around 47. West wind around 5 mph becoming calm  in the evening.
Low: 47 °F
Thursday

Thursday: Partly sunny, with a high near 68. Light and variable wind becoming north 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
High: 68 °F
Thursday
Night
Thursday Night: Mostly cloudy, with a low around 50. North wind 15 to 20 mph, with gusts as high as 30 mph.
Low: 50 °F
Friday

Friday: Sunny, with a high near 71. North wind 10 to 15 mph, with gusts as high as 30 mph.
High: 71 °F
Friday
Night
Friday Night: Clear, with a low around 49.
Low: 49 °F
Saturday

Saturday: Increasing clouds, with a high near 70.
High: 70 °F
Saturday
Night
Saturday Night: Mostly cloudy, with a low around 51.
Low: 51 °F
Sunday

Sunday: A chance of showers after 10am.  Mostly cloudy, with a high near 64.
High: 64 °F
Chance
Showers
Partly Cloudy
Partly Sunny
Mostly Cloudy
Sunny
Clear
Increasing
Clouds
Mostly Cloudy
Chance
Showers


Today
 
A chance of showers. Cloudy, then gradually becoming mostly sunny, with a high near 61. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
 
Partly cloudy, with a low around 47. West wind around 5 mph becoming calm in the evening.
Thursday
 
Partly sunny, with a high near 68. Light and variable wind becoming north 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
 
Mostly cloudy, with a low around 50. North wind 15 to 20 mph, with gusts as high as 30 mph.
Friday
 
Sunny, with a high near 71. North wind 10 to 15 mph, with gusts as high as 30 mph.
Friday Night
 
Clear, with a low around 49.
Saturday
 
Increasing clouds, with a high near 70.
Saturday Night
 
Mostly cloudy, with a low around 51.
Sunday
 
A chance of showers after 10am. Mostly cloudy, with a high near 64.
Sunday Night
 
Showers, mainly after 10pm. Mostly cloudy, with a low around 49.
Washington's Birthday
 
Showers. The rain could be heavy at times. Cloudy, with a high near 57. Breezy.
Monday Night
 
Showers. The rain could be heavy at times. Mostly cloudy, with a low around 46.
Tuesday
 
Showers. The rain could be heavy at times. Mostly cloudy, with a high near 57. Breezy.

Forecast from NOAA-NWS for Fontana.



 


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