National Weather Service Forecast for: Lake Forest CA
Issued by: National Weather Service San Diego, CA
Updated: 8:38 pm PDT Jun 29, 2026
 
Tonight

Tonight: Patchy drizzle after 2am. Mostly cloudy, with a low around 60. East wind around 5 mph.
Mostly Cloudy
then Patchy
Drizzle
 Tuesday

Tuesday: Patchy drizzle before 11am. Partly sunny, with a high near 74. East wind 5 to 10 mph becoming west in the afternoon.
Patchy
Drizzle then
Mostly Sunny
 Tuesday
Night
Tuesday Night: Increasing clouds, with a low around 58. West wind around 5 mph becoming calm in the evening.
Increasing
Clouds
 Wednesday

Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 75. South wind 5 to 10 mph.
Becoming
Sunny
 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 57. West wind around 5 mph becoming calm in the evening.
Partly Cloudy

 Thursday

Thursday: Mostly sunny, with a high near 77.
Mostly Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 59.
Partly Cloudy

 Friday

Friday: Mostly sunny, with a high near 78.
Mostly Sunny

 Friday
Night
Friday Night: Partly cloudy, with a low around 60.
Partly Cloudy
Lo 60 °F Hi 74 °F Lo 58 °F Hi 75 °F Lo 57 °F Hi 77 °F Lo 59 °F Hi 78 °F Lo 60 °F

 

Tonight
 
 Patchy drizzle after 2am. Mostly cloudy, with a low around 60. East wind around 5 mph.
Tuesday
 
 Patchy drizzle before 11am. Partly sunny, with a high near 74. East wind 5 to 10 mph becoming west in the afternoon.
Tuesday Night
 
 Increasing clouds, with a low around 58. West wind around 5 mph becoming calm in the evening.
Wednesday
 
 Cloudy through mid morning, then gradual clearing, with a high near 75. South wind 5 to 10 mph.
Wednesday Night
 
 Partly cloudy, with a low around 57. West wind around 5 mph becoming calm in the evening.
Thursday
 
 Mostly sunny, with a high near 77.
Thursday Night
 
 Partly cloudy, with a low around 59.
Friday
 
 Mostly sunny, with a high near 78.
Friday Night
 
 Partly cloudy, with a low around 60.
Independence Day
 
 Mostly sunny, with a high near 80.
Saturday Night
 
 Partly cloudy, with a low around 61.
Sunday
 
 Mostly sunny, with a high near 80.
Sunday Night
 
 Partly cloudy, with a low around 61.
Monday
 
 Mostly sunny, with a high near 80.

 

Forecast from NOAA-NWS for Lake Forest CA.