National Weather Service Forecast for: Westmont CA
Issued by: National Weather Service Los Angeles/Oxnard, CA
Updated: 12:32 am PST Dec 5, 2025
 
Overnight

Overnight: Clear, with a low around 48. North northeast wind 5 to 10 mph.
Clear
 Friday

Friday: Sunny, with a high near 69. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Sunny
 Friday
Night
Friday Night: Clear, with a low around 49. West wind around 5 mph becoming calm in the evening.
Clear
 Saturday

Saturday: Sunny, with a high near 67. East wind around 5 mph becoming west southwest in the afternoon.
Sunny
 Saturday
Night
Saturday Night: Clear, with a low around 51. North northeast wind around 5 mph.
Clear
 Sunday

Sunday: Sunny, with a high near 70.
Sunny
 Sunday
Night
Sunday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 53.
Clear then
Patchy Fog
 Monday

Monday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 76.
Patchy Fog
then Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 55.
Mostly Clear
Lo 48 °F Hi 69 °F Lo 49 °F Hi 67 °F Lo 51 °F Hi 70 °F Lo 53 °F Hi 76 °F Lo 55 °F

 

Overnight
 
 Clear, with a low around 48. North northeast wind 5 to 10 mph.
Friday
 
 Sunny, with a high near 69. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Friday Night
 
 Clear, with a low around 49. West wind around 5 mph becoming calm in the evening.
Saturday
 
 Sunny, with a high near 67. East wind around 5 mph becoming west southwest in the afternoon.
Saturday Night
 
 Clear, with a low around 51. North northeast wind around 5 mph.
Sunday
 
 Sunny, with a high near 70.
Sunday Night
 
 Patchy fog after 4am. Otherwise, mostly clear, with a low around 53.
Monday
 
 Patchy fog before 10am. Otherwise, mostly sunny, with a high near 76.
Monday Night
 
 Mostly clear, with a low around 55.
Tuesday
 
 Sunny, with a high near 79.
Tuesday Night
 
 Partly cloudy, with a low around 56.
Wednesday
 
 Sunny, with a high near 78.
Wednesday Night
 
 Mostly clear, with a low around 55.
Thursday
 
 Sunny, with a high near 76.

 

Forecast from NOAA-NWS for Westmont CA.