Aviation Digital Data Service (ADDS)

Output produced by METARs form (0432 UTC 28 April 2017)
found at http://www.aviationweather.gov/adds/metars/
 
KIAD 280147Z 2802/2906 18011KT P6SM -SHRA BKN050 
     FM280300 20007KT P6SM BKN045 
     FM280800 24004KT 3SM BR BKN080 
     FM281000 27003KT 2SM BR SCT250 
     FM281200 33004KT 3SM BR SCT250 
     FM281300 33006KT P6SM SCT250 
     FM281700 24004KT P6SM FEW250 
     FM282100 18007KT P6SM SCT250