Aviation Digital Data Service (ADDS)

Output produced by METARs form (1250 UTC 18 August 2017)
found at http://aviationweather.gov/adds/metars/
 
KDCA 181129Z 1812/1912 19005KT P6SM BKN009 BKN090 
     FM181400 19006KT P6SM SCT015 BKN090 
     FM181600 19008G16KT P6SM SCT090 
     FM182100 21008G16KT P6SM -SHRA VCTS OVC050CB 
     FM190100 26004KT P6SM BKN050 
     FM190700 29007KT P6SM SCT050