Aviation Digital Data Service (ADDS)

Output produced by METARs form (1553 UTC 27 May 2015)
found at http://aviationweather.gov/adds/metars/
 
KSFO 271453Z 2715/2818 24007KT P6SM FEW008 SCT011 OVC015 
     FM271800 20008KT P6SM FEW010 FEW014 SCT020 
     TEMPO 2718/2720 BKN020 
     FM272000 29017G22KT P6SM FEW015 FEW020 
     FM280100 29009KT P6SM FEW010 SCT020 
     FM280400 27007KT P6SM FEW008 BKN015 
     FM281000 27007KT P6SM FEW007 OVC012