National Weather Service Forecast for: Lake Forest CA
Issued by: National Weather Service San Diego, CA
Updated: 8:28 pm PDT Jun 8, 2025
 
Overnight

Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 59. Calm wind.
Patchy Fog

 Monday

Monday: Patchy fog before 2pm. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 78. Light south wind increasing to 5 to 10 mph in the morning.
Patchy Fog

 Monday
Night
Monday Night: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening.
Partly Cloudy
then Patchy
Fog
 Tuesday

Tuesday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.
Patchy Fog
then Mostly
Sunny
 Tuesday
Night
Tuesday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 62. South wind around 5 mph becoming calm after midnight.
Patchy Fog

 Wednesday

Wednesday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 83.
Patchy Fog
then Mostly
Sunny
 Wednesday
Night
Wednesday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 63.
Patchy Fog

 Thursday

Thursday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 82.
Patchy Fog
then Mostly
Sunny
 Thursday
Night
Thursday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 62.
Patchy Fog
Lo 59 °F Hi 78 °F Lo 60 °F Hi 82 °F Lo 62 °F Hi 83 °F Lo 63 °F Hi 82 °F Lo 62 °F

 

Overnight
 
 Patchy fog. Otherwise, mostly cloudy, with a low around 59. Calm wind.
Monday
 
 Patchy fog before 2pm. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 78. Light south wind increasing to 5 to 10 mph in the morning.
Monday Night
 
 Patchy fog after 2am. Otherwise, partly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening.
Tuesday
 
 Patchy fog before 11am. Otherwise, mostly sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
 
 Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 62. South wind around 5 mph becoming calm after midnight.
Wednesday
 
 Patchy fog before 11am. Otherwise, partly sunny, with a high near 83.
Wednesday Night
 
 Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 63.
Thursday
 
 Patchy fog before 11am. Otherwise, mostly sunny, with a high near 82.
Thursday Night
 
 Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 62.
Friday
 
 Patchy fog before 11am. Otherwise, mostly sunny, with a high near 82.
Friday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 62.
Saturday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 84.
Saturday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 63.
Sunday
 
 Patchy fog. Otherwise, sunny, with a high near 88.

 

Forecast from NOAA-NWS for Lake Forest CA.