National Weather Service Forecast for: 3 Miles NNE Lake Forest CA
Issued by: National Weather Service San Diego, CA
Updated: 12:18 am PDT Sep 13, 2026
 
Overnight

Overnight: Mostly cloudy, with a low around 65. Calm wind.
Mostly Cloudy
 Sunday

Sunday: Partly sunny, then gradually becoming sunny, with a high near 85. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Becoming
Sunny
 Sunday
Night
Sunday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 63. Calm wind becoming southeast around 5 mph after midnight.
Patchy Fog
 Monday

Monday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 83. South wind 5 to 10 mph.
Patchy Fog
then Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 61. Southeast wind around 5 mph.
Mostly Clear
 Tuesday

Tuesday: Sunny, with a high near 83.
Sunny
 Tuesday
Night
Tuesday Night: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 59.
Patchy Fog
 Wednesday

Wednesday: Sunny, with a high near 83.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 59.
Mostly Clear
Lo 65 °F Hi 85 °F Lo 63 °F Hi 83 °F Lo 61 °F Hi 83 °F Lo 59 °F Hi 83 °F Lo 59 °F

 

Overnight
 
 Mostly cloudy, with a low around 65. Calm wind.
Sunday
 
 Partly sunny, then gradually becoming sunny, with a high near 85. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Sunday Night
 
 Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 63. Calm wind becoming southeast around 5 mph after midnight.
Monday
 
 Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 83. South wind 5 to 10 mph.
Monday Night
 
 Mostly clear, with a low around 61. Southeast wind around 5 mph.
Tuesday
 
 Sunny, with a high near 83.
Tuesday Night
 
 Patchy fog after 11pm. Otherwise, mostly clear, with a low around 59.
Wednesday
 
 Sunny, with a high near 83.
Wednesday Night
 
 Mostly clear, with a low around 59.
Thursday
 
 Sunny, with a high near 84.
Thursday Night
 
 Clear, with a low around 61.
Friday
 
 Sunny, with a high near 88.
Friday Night
 
 Clear, with a low around 64.
Saturday
 
 Sunny, with a high near 91.

 

Forecast from NOAA-NWS for 3 Miles NNE Lake Forest CA.