Surface observations

Data from the National Weather Service, made available here by the UAlbany Department of Atmospheric and Environmental Sciences

The weather observed at SAN FRANCISCO, CA (KSFO) at 11:56 AM PST was:
  The skies were mostly cloudy.
  Temperature: 54F ( 12C)  Dewpoint:  39F (  4C)  Relative Humidity:  58%
  Winds from the WNW(290 degs) at 23 mph.
  Pressure: 1013.9 millibars.  Altimeter:29.94 inches of mercury.
  The prevailing visibility was 10 miles.