National Weather Service Forecast for: Fallbrook CA
Issued by: National Weather Service San Diego, CA
Updated: 1:04 pm PDT Jun 19, 2026
 
Tonight

Tonight: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 55. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Patchy Fog
 Saturday

Saturday: Cloudy through mid morning, then gradual clearing, with a high near 74. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Becoming
Sunny
 Saturday
Night
Saturday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 54. Southwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Patchy Fog
 Sunday

Sunday: Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 75. 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
 Sunday
Night
Sunday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 55. Southwest wind 5 to 10 mph becoming light and variable in the evening.
Patchy Fog
 Monday

Monday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 77.
Patchy Fog
then Sunny
 Monday
Night
Monday Night: Increasing clouds, with a low around 56.
Increasing
Clouds
 Tuesday

Tuesday: Mostly sunny, with a high near 83.
Mostly Sunny
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 60.
Mostly Clear
Lo 55 °F Hi 74 °F Lo 54 °F Hi 75 °F Lo 55 °F Hi 77 °F Lo 56 °F Hi 83 °F Lo 60 °F

 

Tonight
 
 Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 55. Southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Saturday
 
 Cloudy through mid morning, then gradual clearing, with a high near 74. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
 
 Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 54. Southwest wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Sunday
 
 Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 75. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
 
 Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 55. Southwest wind 5 to 10 mph becoming light and variable in the evening.
Monday
 
 Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 77.
Monday Night
 
 Increasing clouds, with a low around 56.
Tuesday
 
 Mostly sunny, with a high near 83.
Tuesday Night
 
 Mostly clear, with a low around 60.
Wednesday
 
 Sunny, with a high near 85.
Wednesday Night
 
 Mostly clear, with a low around 61.
Thursday
 
 Mostly sunny, with a high near 85.
Thursday Night
 
 Mostly clear, with a low around 60.
Friday
 
 Mostly sunny, with a high near 82.

 

Forecast from NOAA-NWS for Fallbrook CA.