Aviation Digital Data Service (ADDS)

Output produced by METARs form (1756 UTC 20 January 2017)
found at http://aviationweather.gov/adds/metars/
 
KSFO 201740Z 2018/2124 00000KT P6SM -RA FEW030 BKN050 BKN070 
     FM210300 26022G30KT P6SM -SHRA BKN015 OVC040 
     FM210900 26017G25KT P6SM VCSH BKN050 OVC100 
     FM211400 26014KT P6SM VCSH BKN050 OVC100