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Weather Forecast for Fontana

Now
Current Weather Conditions
60° F

Wind: 4.61 mph
Humidity: 66%
Clouds: 75%
Pressure: 1017 hPa
Sunrise: 10:34 AM ET
Sunset: 9:33 PM ET
Tomorrow
Tomorrow's Weather Conditions
Mostly Cloudy
then Slight
Chance Rain

Rain

Tue
Tue's Weather Conditions
Showers


Showers
Likely



Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 1:17 am PST Feb 15, 2026
 
Today

Today: Mostly cloudy, with a high near 63. Calm wind becoming west around 5 mph in the afternoon.
High: 63 °F
Tonight

Tonight: A slight chance of rain after 4am.  Mostly cloudy, with a low around 47. Southwest wind 5 to 10 mph becoming light and variable  after midnight.  Chance of precipitation is 10%.
Low: 47 °F
Washington's
Birthday
Washington's Birthday: Rain, mainly after 10am.  High near 58. South wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
High: 58 °F
Monday
Night
Monday Night: Showers and possibly a thunderstorm.  Low around 47. South wind 5 to 15 mph becoming west after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Low: 47 °F
Tuesday

Tuesday: Showers likely, mainly before 10am.  Mostly cloudy, with a high near 57. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
High: 57 °F
Tuesday
Night
Tuesday Night: Showers, mainly after 10pm.  Low around 47. Breezy.  Chance of precipitation is 80%.
Low: 47 °F
Wednesday

Wednesday: Showers, mainly before 10am.  High near 57. Breezy.  Chance of precipitation is 80%.
High: 57 °F
Wednesday
Night
Wednesday Night: A chance of showers, mainly before 10pm.  Partly cloudy, with a low around 42.
Low: 42 °F
Thursday

Thursday: A chance of showers, mainly after 10am.  Mostly sunny, with a high near 57.
High: 57 °F
Mostly Cloudy

Mostly Cloudy
then Slight
Chance Rain
Rain

Showers

Showers
Likely

Showers and
Breezy

Breezy.
Showers then
Chance
Showers
Chance
Showers

Chance
Showers

Wind Advisory


Today
 
Mostly cloudy, with a high near 63. Calm wind becoming west around 5 mph in the afternoon.
Tonight
 
A slight chance of rain after 4am. Mostly cloudy, with a low around 47. Southwest wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 10%.
Washington's Birthday
 
Rain, mainly after 10am. High near 58. South wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
 
Showers and possibly a thunderstorm. Low around 47. South wind 5 to 15 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
 
Showers likely, mainly before 10am. Mostly cloudy, with a high near 57. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
 
Showers, mainly after 10pm. Low around 47. Breezy. Chance of precipitation is 80%.
Wednesday
 
Showers, mainly before 10am. High near 57. Breezy. Chance of precipitation is 80%.
Wednesday Night
 
A chance of showers, mainly before 10pm. Partly cloudy, with a low around 42.
Thursday
 
A chance of showers, mainly after 10am. Mostly sunny, with a high near 57.
Thursday Night
 
A slight chance of showers. Partly cloudy, with a low around 41.
Friday
 
Mostly sunny, with a high near 60.
Friday Night
 
Partly cloudy, with a low around 44.
Saturday
 
Mostly sunny, with a high near 65.

Forecast from NOAA-NWS for Fontana.



 


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