Aviation Digital Data Service (ADDS)

Output produced by METARs form (1203 UTC 23 August 2017)
found at http://aviationweather.gov/adds/metars/
 
KIAD 231131Z 2312/2418 33006KT P6SM SCT080 BKN130 
     FM231600 35007KT P6SM BKN050 
     FM240000 35004KT P6SM SCT250