Aviation Digital Data Service (ADDS)

Output produced by METARs form (2049 UTC 15 August 2018)
found at http://aviationweather.gov/adds/metars/
 
EGLL 152020Z AUTO 21011KT 9999 OVC037 20/15 Q1016 NOSIG
TAF EGLL 151654Z 1518/1624 22012KT 9999 BKN038 
     TEMPO 1607/1615 7000 -RA BKN012 
     PROB40 
     TEMPO 1609/1614 4000 RA BKN008 
     BECMG 1615/1618 28006KT