National Weather Service Forecast for: 3 Miles SW Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 2:56 am PDT Jun 20, 2025
 
Today

Today: Sunny, with a high near 85. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Sunny
 Tonight

Tonight: Mostly clear, with a low around 59. West wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Mostly Clear
 Saturday

Saturday: Patchy fog before 11am. Otherwise, sunny, with a high near 79. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Patchy Fog
then Sunny
 Saturday
Night
Saturday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 58. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Patchy Fog
 Sunday

Sunday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 83. West wind 5 to 15 mph, with gusts as high as 20 mph.
Patchy Fog
then Sunny
 Sunday
Night
Sunday Night: Mostly clear, with a low around 58.
Mostly Clear
 Monday

Monday: Patchy fog before 11am. Otherwise, sunny, with a high near 84.
Patchy Fog
then Sunny
 Monday
Night
Monday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 57.
Patchy Fog
 Tuesday

Tuesday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 83.
Patchy Fog
then Sunny
Hi 85 °F Lo 59 °F Hi 79 °F Lo 58 °F Hi 83 °F Lo 58 °F Hi 84 °F Lo 57 °F Hi 83 °F

 

Today
 
 Sunny, with a high near 85. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
 
 Mostly clear, with a low around 59. West wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Saturday
 
 Patchy fog before 11am. Otherwise, sunny, with a high near 79. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
 
 Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 58. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
 
 Patchy fog before 11am. Otherwise, mostly sunny, with a high near 83. West wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
 
 Mostly clear, with a low around 58.
Monday
 
 Patchy fog before 11am. Otherwise, sunny, with a high near 84.
Monday Night
 
 Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 57.
Tuesday
 
 Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 83.
Tuesday Night
 
 Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 58.
Wednesday
 
 Patchy fog. Otherwise, partly sunny, then gradually becoming sunny, with a high near 87.
Wednesday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 61.
Thursday
 
 Patchy fog. Otherwise, sunny, with a high near 90.

 

Forecast from NOAA-NWS for 3 Miles SW Fontana CA.