Aviation Digital Data Service (ADDS)

Output produced by METARs form (1130 UTC 21 February 2018)
found at http://aviationweather.gov/adds/metars/
 
KIAD 201457Z 2015/2118 21011KT P6SM SCT015 SCT250 
     FM201700 20011G18KT P6SM SCT250 
     FM210600 20008KT P6SM BKN010 
     FM211400 21009KT P6SM SCT025