Daly City is the only town that actually borders San Francisco. It was named after the famous John Daly, (who was famous for having a city named after him). The Daly City coast (where I live) is the foggiest spot in the country - considerably foggier than even San Francisco. In summer the fog can sometimes last six weeks without ever clearing once.
From our back yard on a clear day.
More typically.
As the soup closes in.
Here it comes.
San Francsico as seen from above Daly City
The road to Fogville
And here's the link to the weather station on our roof. Today we're having a "warm fog" with a relatively low humidity reading of only 99%.