The weather observed at SAN FRANCISCO, CA (KSFO) at 07:56 AM PST was: The skies were clear. Temperature: 38F ( 3C) Dewpoint: 19F ( -7C) Relative Humidity: 46% Winds from the SE (150 degs) at 12 mph. Pressure: 1028.4 millibars. Altimeter:30.37 inches of mercury. The prevailing visibility was 10 miles.