National Weather Service Forecast for: 3 Miles WSW Atherton CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 12:46 am PDT Aug 20, 2026
 
Overnight

Overnight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 56. Calm wind.
Patchy Fog

 Thursday

Thursday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 79. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Patchy Fog
then Mostly
Sunny
 Thursday
Night
Thursday Night: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 55. Southwest wind around 5 mph becoming calm in the evening.
Mostly Cloudy
then Patchy
Fog
 Friday

Friday: Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 77. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Patchy Fog
then Mostly
Sunny
 Friday
Night
Friday Night: Partly cloudy, with a low around 55. West northwest wind 3 to 8 mph.
Partly Cloudy

 Saturday

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

 Saturday
Night
Saturday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 54.
Clear then
Patchy Fog
 Sunday

Sunday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 80.
Patchy Fog
then Mostly
Sunny
 Sunday
Night
Sunday Night: Partly cloudy, with a low around 56.
Partly Cloudy
Lo 56 °F Hi 79 °F Lo 55 °F Hi 77 °F Lo 55 °F Hi 78 °F Lo 54 °F Hi 80 °F Lo 56 °F

 

Overnight
 
 Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 56. Calm wind.
Thursday
 
 Patchy fog before 9am. Otherwise, partly sunny, with a high near 79. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Thursday Night
 
 Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 55. Southwest wind around 5 mph becoming calm in the evening.
Friday
 
 Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 77. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Friday Night
 
 Partly cloudy, with a low around 55. West northwest wind 3 to 8 mph.
Saturday
 
 Mostly sunny, with a high near 78.
Saturday Night
 
 Patchy fog after 2am. Otherwise, mostly clear, with a low around 54.
Sunday
 
 Patchy fog before 9am. Otherwise, mostly sunny, with a high near 80.
Sunday Night
 
 Partly cloudy, with a low around 56.
Monday
 
 Patchy fog before 9am. Otherwise, mostly sunny, with a high near 78.
Monday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 55.
Tuesday
 
 Areas of fog. Otherwise, mostly sunny, with a high near 78.
Tuesday Night
 
 Partly cloudy, with a low around 54.
Wednesday
 
 Mostly sunny, with a high near 81.

 

Forecast from NOAA-NWS for 3 Miles WSW Atherton CA.