Aviation Digital Data Service (ADDS)

Output produced by METARs form (1357 UTC 30 January 2015)
found at http://www.aviationweather.gov/adds/metars/
 
KSFO 301311Z 3013/3118 28004KT P6SM BKN009 
     FM301400 28004KT 4SM BR BKN005 
     FM301900 34005KT 6SM BR FEW010 
     FM302300 28015KT P6SM FEW012 
     FM310400 30010KT P6SM FEW010 
     FM310600 29005KT P6SM FEW010