Aviation Digital Data Service (ADDS)

Output produced by METARs form (0135 UTC 19 October 2017)
found at http://aviationweather.gov/adds/metars/
 
KIAD 182320Z 1900/2006 VRB03KT P6SM FEW150 SCT250 
     FM191700 20006KT P6SM FEW250 
     FM192300 VRB04KT P6SM FEW250