National Weather Service Forecast for: Fallbrook CA
Issued by: National Weather Service San Diego, CA
Updated: 12:29 am PDT Jun 22, 2026
 
Overnight

Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 56. Calm wind.
Patchy Fog

 Monday

Monday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 78. Light south wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Patchy Fog
then Sunny
 Monday
Night
Monday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 58. Southwest wind 5 to 10 mph becoming light in the evening.
Patchy Fog

 Tuesday

Tuesday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Patchy Fog
then Mostly
Sunny
 Tuesday
Night
Tuesday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 61. South wind around 5 mph becoming calm in the evening.
Patchy Fog

 Wednesday

Wednesday: Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 83.
Patchy Fog
then Mostly
Sunny
 Wednesday
Night
Wednesday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 60.
Patchy Fog

 Thursday

Thursday: Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 82.
Patchy Fog
then Sunny
 Thursday
Night
Thursday Night: Partly cloudy, with a low around 58.
Partly Cloudy
Lo 56 °F Hi 78 °F Lo 58 °F Hi 81 °F Lo 61 °F Hi 83 °F Lo 60 °F Hi 82 °F Lo 58 °F

 

Overnight
 
 Patchy fog. Otherwise, mostly cloudy, with a low around 56. Calm wind.
Monday
 
 Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 78. Light south wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Monday Night
 
 Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 58. Southwest wind 5 to 10 mph becoming light in the evening.
Tuesday
 
 Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
 
 Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 61. South wind around 5 mph becoming calm in the evening.
Wednesday
 
 Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 83.
Wednesday Night
 
 Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 60.
Thursday
 
 Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 82.
Thursday Night
 
 Partly cloudy, with a low around 58.
Friday
 
 Partly sunny, then gradually becoming sunny, with a high near 82.
Friday Night
 
 Increasing clouds, with a low around 57.
Saturday
 
 Mostly sunny, with a high near 81.
Saturday Night
 
 Increasing clouds, with a low around 58.
Sunday
 
 Mostly cloudy through mid morning, then gradual clearing, with a high near 74.

 

Forecast from NOAA-NWS for Fallbrook CA.