Aviation Digital Data Service (ADDS)

Output produced by METARs form (2155 UTC 24 March 2017)
found at http://aviationweather.gov/adds/metars/
 
KIAD 242058Z 2421/2524 20008G16KT P6SM BKN200 
     FM250000 20008KT P6SM BKN200 
     FM250700 21004KT P6SM BKN120