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Weather Forecast for Fontana

Now
Current Weather Conditions
53° F

Wind: 3.44 mph
Humidity: 41%
Clouds: 0%
Pressure: 1020 hPa
Sunrise: 10:54 AM ET
Sunset: 9:05 PM ET
Tomorrow
Tomorrow's Weather Conditions
Mostly Clear

Sunny
Tue
Tue's Weather Conditions
Clear

Sunny


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 1:15 am PST Jan 18, 2026
 
Today

Today: Mostly sunny, with a high near 79. North wind 5 to 10 mph, with gusts as high as 20 mph.
High: 79 °F
Tonight

Tonight: Mostly clear, with a low around 53. North wind around 5 mph.
Low: 53 °F
M.L.King
Day
M.L.King Day: Sunny, with a high near 79. North wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
High: 79 °F
Monday
Night
Monday Night: Clear, with a low around 52. North wind around 20 mph, with gusts as high as 30 mph.
Low: 52 °F
Tuesday

Tuesday: Sunny, with a high near 77. North wind 15 to 20 mph, with gusts as high as 30 mph.
High: 77 °F
Tuesday
Night
Tuesday Night: Mostly clear, with a low around 50.
Low: 50 °F
Wednesday

Wednesday: Sunny, with a high near 75.
High: 75 °F
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 51.
Low: 51 °F
Thursday

Thursday: Mostly sunny, with a high near 72.
High: 72 °F
Mostly Sunny
Mostly Clear
Sunny
Clear
Sunny
Mostly Clear
Sunny
Partly Cloudy
Mostly Sunny


Today
 
Mostly sunny, with a high near 79. North wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
 
Mostly clear, with a low around 53. North wind around 5 mph.
M.L.King Day
 
Sunny, with a high near 79. North wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
 
Clear, with a low around 52. North wind around 20 mph, with gusts as high as 30 mph.
Tuesday
 
Sunny, with a high near 77. North wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
 
Mostly clear, with a low around 50.
Wednesday
 
Sunny, with a high near 75.
Wednesday Night
 
Partly cloudy, with a low around 51.
Thursday
 
Mostly sunny, with a high near 72.
Thursday Night
 
Partly cloudy, with a low around 50.
Friday
 
Mostly sunny, with a high near 68.
Friday Night
 
Partly cloudy, with a low around 50.
Saturday
 
Mostly sunny, with a high near 68.

Forecast from NOAA-NWS for Fontana.



 


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