Aviation Digital Data Service (ADDS)

Output produced by METARs form (0841 UTC 18 August 2017)
found at http://aviationweather.gov/adds/metars/
 
KIAD 180808Z 1808/1912 VRB04KT 6SM BR BKN006 
     FM181300 20006KT P6SM BKN090 
     FM181600 20008G16KT P6SM SCT090 
     FM182100 24008G16KT P6SM -SHRA VCTS OVC050CB 
     FM190100 VRB04KT P6SM BKN050 
     FM190600 VRB03KT 5SM BR SCT200