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Weather Forecast for Fontana

Now
Current Weather Conditions
62° F

Wind: 6.91 mph
Humidity: 81%
Clouds: 100%
Pressure: 1017 hPa
Sunrise: 10:21 AM ET
Sunset: 8:46 PM ET
Tomorrow
Tomorrow's Weather Conditions
Showers


Heavy Rain

Sun
Sun's Weather Conditions
Showers


Showers
Likely then
Chance
Showers


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 2:37 am PST Nov 14, 2025
 
Today

Today: Showers, with thunderstorms also possible after 4pm.  High near 67. Southeast wind around 5 mph becoming calm  in the afternoon.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
High: 67 °F
Tonight

Tonight: Showers likely and possibly a thunderstorm before 10pm, then showers between 10pm and 1am, then showers and possibly a thunderstorm after 1am.  Low around 57. Northeast wind around 5 mph.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Low: 57 °F
Saturday

Saturday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall.  High near 63. East wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.  Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
High: 63 °F
Saturday
Night
Saturday Night: Showers and possibly a thunderstorm.  Low around 50. South wind around 10 mph.  Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Low: 50 °F
Sunday

Sunday: Showers likely, mainly before 10am.  Cloudy, with a high near 59. Southwest wind 5 to 10 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
High: 59 °F
Sunday
Night
Sunday Night: A chance of showers.  Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Low: 50 °F
Monday

Monday: Showers likely.  Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
High: 60 °F
Monday
Night
Monday Night: Showers likely.  Mostly cloudy, with a low around 48.
Low: 48 °F
Tuesday

Tuesday: A chance of showers.  Partly sunny, with a high near 60.
High: 60 °F
Showers

Showers

Heavy Rain

Showers

Showers
Likely then
Chance
Showers
Chance
Showers

Showers
Likely

Showers
Likely

Chance
Showers

Flood Watch


Today
 
Showers, with thunderstorms also possible after 4pm. High near 67. Southeast wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
 
Showers likely and possibly a thunderstorm before 10pm, then showers between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 57. Northeast wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
 
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 63. East wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Saturday Night
 
Showers and possibly a thunderstorm. Low around 50. South wind around 10 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
 
Showers likely, mainly before 10am. Cloudy, with a high near 59. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
 
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Monday
 
Showers likely. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
Monday Night
 
Showers likely. Mostly cloudy, with a low around 48.
Tuesday
 
A chance of showers. Partly sunny, with a high near 60.
Tuesday Night
 
A chance of showers, mainly before 10pm. Mostly cloudy, with a low around 46.
Wednesday
 
Mostly sunny, with a high near 62.
Wednesday Night
 
Partly cloudy, with a low around 47.
Thursday
 
A slight chance of showers. Partly sunny, with a high near 60.

Forecast from NOAA-NWS for Fontana.



 


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