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Weather Forecast for Fontana

Now
Current Weather Conditions
60° F

Wind: 4.61 mph
Humidity: 36%
Clouds: 0%
Pressure: 1020 hPa
Sunrise: 10:55 AM ET
Sunset: 9:02 PM ET
Tomorrow
Tomorrow's Weather Conditions
Sunny


Clear

Sat
Sat's Weather Conditions
Sunny


Mostly Clear



Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 12:51 am PST Jan 15, 2026
 
Overnight

Overnight: Clear, with a low around 56. North wind around 15 mph, with gusts as high as 25 mph.
Low: 56 °F
Thursday

Thursday: Sunny, with a high near 79. North wind 10 to 15 mph, with gusts as high as 25 mph.
High: 79 °F
Thursday
Night
Thursday Night: Clear, with a low around 52. North wind 5 to 15 mph, with gusts as high as 20 mph.
Low: 52 °F
Friday

Friday: Sunny, with a high near 80. North wind 15 to 20 mph, with gusts as high as 30 mph.
High: 80 °F
Friday
Night
Friday Night: Mostly clear, with a low around 53. North wind around 15 mph, with gusts as high as 30 mph.
Low: 53 °F
Saturday

Saturday: Mostly sunny, with a high near 80. Breezy.
High: 80 °F
Saturday
Night
Saturday Night: Partly cloudy, with a low around 52. Breezy.
Low: 52 °F
Sunday

Sunday: Mostly sunny, with a high near 79.
High: 79 °F
Sunday
Night
Sunday Night: Mostly clear, with a low around 52.
Low: 52 °F
Clear

Sunny

Clear

Sunny

Mostly Clear

Mostly Sunny
and Breezy

Partly Cloudy
and Breezy
then Partly
Cloudy
Mostly Sunny

Mostly Clear


Overnight
 
Clear, with a low around 56. North wind around 15 mph, with gusts as high as 25 mph.
Thursday
 
Sunny, with a high near 79. North wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
 
Clear, with a low around 52. North wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
 
Sunny, with a high near 80. North wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
 
Mostly clear, with a low around 53. North wind around 15 mph, with gusts as high as 30 mph.
Saturday
 
Mostly sunny, with a high near 80. Breezy.
Saturday Night
 
Partly cloudy, with a low around 52. Breezy.
Sunday
 
Mostly sunny, with a high near 79.
Sunday Night
 
Mostly clear, with a low around 52.
M.L.King Day
 
Mostly sunny, with a high near 78.
Monday Night
 
Mostly clear, with a low around 52.
Tuesday
 
Sunny, with a high near 75.
Tuesday Night
 
Mostly clear, with a low around 51.
Wednesday
 
Mostly sunny, with a high near 71.

Forecast from NOAA-NWS for Fontana.



 


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