Aviation Digital Data Service (ADDS)

Output produced by METARs form (1455 UTC 23 May 2015)
found at http://aviationweather.gov/adds/metars/
 
KORD 231413Z 2314/2418 17011KT P6SM BKN120 
     FM232000 14011KT P6SM BKN100 
     FM240100 15006KT P6SM BKN070 
     FM241000 16008KT P6SM SCT040 BKN060 
     PROB30 2414/2418 -SHRA