Aviation Digital Data Service (ADDS)

Output produced by METARs form (1709 UTC 03 September 2015)
found at http://www.aviationweather.gov/adds/metars/
 
KIAD 031457Z 0315/0418 32008KT P6SM SCT060 
     FM032000 32008KT P6SM BKN060 
     FM040000 34004KT P6SM BKN060 
     FM041500 04005KT P6SM BKN050