Aviation Digital Data Service (ADDS)

Output produced by METARs form (1527 UTC 16 September 2014)
found at http://www.aviationweather.gov/adds/metars/
 
KIAD 161505Z 1615/1718 32008G16KT P6SM SCT050 
     FM162100 32008KT P6SM SCT050 
     FM170000 VRB04KT P6SM FEW050 
     FM171200 02004KT P6SM FEW050