The weather observed at SAN FRANCISCO, CA (KSFO) at 02:56 PM PDT was: The skies were mostly clear. Temperature: 65F ( 18C) Dewpoint: 53F ( 12C) Relative Humidity: 65% Winds from the W (280 degs) at 23 mph. Pressure: 1016.7 millibars. Altimeter:30.03 inches of mercury. The prevailing visibility was 10 miles.