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Weather Forecast for Fontana

Now
Current Weather Conditions
74° F

Wind: 14.97 mph
Humidity: 38%
Clouds: 0%
Pressure: 1010 hPa
Sunrise: 9:07 AM ET
Sunset: 10:27 PM ET
Tomorrow
Tomorrow's Weather Conditions
Slight Chance
Showers

Showers
Likely
Sun
Sun's Weather Conditions
Chance
Showers then
Mostly Sunny

Partly Cloudy



Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 11:22 am PDT Apr 24, 2026
 
Tonight

Tonight: Increasing clouds, with a low around 54. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Low: 54 °F
Saturday

Saturday: A slight chance of showers.  Mostly cloudy, with a high near 67. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.  Chance of precipitation is 20%.
High: 67 °F
Saturday
Night
Saturday Night: Showers likely.  Mostly cloudy, with a low around 50. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Low: 50 °F
Sunday

Sunday: A chance of showers before 11am.  Mostly sunny, with a high near 66. Southwest wind 5 to 15 mph, with gusts as high as 30 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
High: 66 °F
Sunday
Night
Sunday Night: Partly cloudy, with a low around 50. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Low: 50 °F
Monday

Monday: Mostly sunny, with a high near 70.
High: 70 °F
Monday
Night
Monday Night: Mostly clear, with a low around 50.
Low: 50 °F
Tuesday

Tuesday: Mostly sunny, with a high near 76.
High: 76 °F
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 54.
Low: 54 °F
Increasing
Clouds
Slight Chance
Showers
Showers
Likely
Chance
Showers then
Mostly Sunny
Partly Cloudy

Mostly Sunny

Mostly Clear

Mostly Sunny

Partly Cloudy


Tonight
 
Increasing clouds, with a low around 54. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
 
A slight chance of showers. Mostly cloudy, with a high near 67. Southwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Saturday Night
 
Showers likely. Mostly cloudy, with a low around 50. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
 
A chance of showers before 11am. Mostly sunny, with a high near 66. Southwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
 
Partly cloudy, with a low around 50. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Monday
 
Mostly sunny, with a high near 70.
Monday Night
 
Mostly clear, with a low around 50.
Tuesday
 
Mostly sunny, with a high near 76.
Tuesday Night
 
Partly cloudy, with a low around 54.
Wednesday
 
A slight chance of showers after 11am. Mostly sunny, with a high near 75.
Wednesday Night
 
Mostly clear, with a low around 53.
Thursday
 
Sunny, with a high near 76.
Thursday Night
 
Mostly clear, with a low around 56.
Friday
 
Sunny, with a high near 85.

Forecast from NOAA-NWS for Fontana.



 


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