National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 1:35 am PDT Jun 14, 2025
 
Today

Today: Mostly sunny, with a high near 90. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Mostly Sunny
 Tonight

Tonight: Mostly clear, with a low around 65. West wind 5 to 10 mph becoming light and variable in the evening.
Mostly Clear
 Sunday

Sunday: Sunny, with a high near 95. Light south wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Sunny
 Sunday
Night
Sunday Night: Mostly clear, with a low around 67. West wind 5 to 10 mph becoming light in the evening.
Mostly Clear
 Monday

Monday: Sunny, with a high near 93. Light southwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 65.
Mostly Clear
 Tuesday

Tuesday: Sunny, with a high near 92.
Sunny
 Tuesday
Night
Tuesday Night: Clear, with a low around 65.
Clear
 Wednesday

Wednesday: Sunny, with a high near 93.
Sunny
Hi 90 °F Lo 65 °F Hi 95 °F Lo 67 °F Hi 93 °F Lo 65 °F Hi 92 °F Lo 65 °F Hi 93 °F

 

Today
 
 Mostly sunny, with a high near 90. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
 
 Mostly clear, with a low around 65. West wind 5 to 10 mph becoming light and variable in the evening.
Sunday
 
 Sunny, with a high near 95. Light south wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
 
 Mostly clear, with a low around 67. West wind 5 to 10 mph becoming light in the evening.
Monday
 
 Sunny, with a high near 93. Light southwest wind increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
 
 Mostly clear, with a low around 65.
Tuesday
 
 Sunny, with a high near 92.
Tuesday Night
 
 Clear, with a low around 65.
Wednesday
 
 Sunny, with a high near 93.
Wednesday Night
 
 Mostly clear, with a low around 64.
Juneteenth
 
 Sunny, with a high near 91.
Thursday Night
 
 Clear, with a low around 64.
Friday
 
 Sunny, with a high near 90.

 

Forecast from NOAA-NWS for Fontana CA.