Aviation Digital Data Service (ADDS)

Output produced by METARs form (0624 UTC 30 May 2015)
found at http://aviationweather.gov/adds/metars/
 
KIAD 300538Z 3006/3112 17007KT P6SM SCT100 
     FM300900 17006KT 5SM BR SCT100 
     FM301100 19007KT 3SM BR SCT150 
     FM301200 19008KT P6SM SCT200 
     FM301800 19011KT P6SM SCT050 
     FM301900 19011KT P6SM BKN050 
     FM310100 18008KT P6SM SCT050 
     FM310700 19006KT P6SM SCT250