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Weather Forecast for Fontana

Now
Current Weather Conditions
61° F

Wind: 3 mph
Humidity: 60%
Clouds: 0%
Pressure: 1020 hPa
Sunrise: 10:35 AM ET
Sunset: 9:32 PM ET
Tomorrow
Tomorrow's Weather Conditions
Patchy Fog


Patchy Fog
then Partly
Sunny
Mon
Mon's Weather Conditions
Chance Rain


Rain and
Breezy


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 1:09 am PST Feb 14, 2026
 
Today

Today: Mostly sunny, with a high near 69. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
High: 69 °F
Tonight

Tonight: Patchy fog after 10pm.  Otherwise, increasing clouds, with a low around 47. West wind 5 to 10 mph.
Low: 47 °F
Sunday

Sunday: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 65. Light south wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
High: 65 °F
Sunday
Night
Sunday Night: A chance of rain, mainly after 4am.  Mostly cloudy, with a low around 49. Southwest wind 5 to 10 mph becoming southeast after midnight.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Low: 49 °F
Washington's
Birthday
Washington's Birthday: Rain, mainly after 10am.  High near 57. Breezy, with a south wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
High: 57 °F
Monday
Night
Monday Night: Showers and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms after 4am.  Low around 47. Chance of precipitation is 100%.
Low: 47 °F
Tuesday

Tuesday: Showers likely, mainly after 10am.  Mostly cloudy, with a high near 56. Chance of precipitation is 70%.
High: 56 °F
Tuesday
Night
Tuesday Night: Showers.  Cloudy, with a low around 46.
Low: 46 °F
Wednesday

Wednesday: Showers likely, mainly before 10am.  Mostly cloudy, with a high near 55. Breezy.
High: 55 °F
Mostly Sunny

Patchy Fog

Patchy Fog
then Partly
Sunny
Chance Rain

Rain and
Breezy
Showers

Showers
Likely
Showers

Showers
Likely and
Breezy


Today
 
Mostly sunny, with a high near 69. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Tonight
 
Patchy fog after 10pm. Otherwise, increasing clouds, with a low around 47. West wind 5 to 10 mph.
Sunday
 
Patchy fog before 10am. Otherwise, partly sunny, with a high near 65. Light south wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
 
A chance of rain, mainly after 4am. Mostly cloudy, with a low around 49. Southwest wind 5 to 10 mph becoming southeast after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Washington's Birthday
 
Rain, mainly after 10am. High near 57. Breezy, with a south wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
 
Showers and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms after 4am. Low around 47. Chance of precipitation is 100%.
Tuesday
 
Showers likely, mainly after 10am. Mostly cloudy, with a high near 56. Chance of precipitation is 70%.
Tuesday Night
 
Showers. Cloudy, with a low around 46.
Wednesday
 
Showers likely, mainly before 10am. Mostly cloudy, with a high near 55. Breezy.
Wednesday Night
 
A chance of showers, mainly before 10pm. Mostly cloudy, with a low around 42.
Thursday
 
A slight chance of showers. Mostly sunny, with a high near 58.
Thursday Night
 
A slight chance of showers. Partly cloudy, with a low around 42.
Friday
 
Sunny, with a high near 62.

Forecast from NOAA-NWS for Fontana.



 


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