Aviation Digital Data Service (ADDS)

Output produced by METARs form (0131 UTC 29 April 2017)
found at http://aviationweather.gov/adds/metars/
 
KIAD 282335Z 2900/3006 15006KT P6SM SCT250 
     FM290700 19006KT P6SM VCTS BKN060CB 
     FM291000 21007KT P6SM BKN060 
     FM291300 22008KT P6SM SCT080 
     FM300200 20005KT P6SM BKN060