Aviation Digital Data Service (ADDS)

Output produced by METARs form (0051 UTC 23 December 2014)
found at http://aviationweather.gov/adds/metars/
 
KORD 222333Z 2300/2406 10012KT 2SM RA BR OVC006 
     FM230300 11012KT 2SM -DZ BR OVC004 
     FM230700 12010KT 1 1/2SM RA BR OVC004 
     FM231100 19009KT 4SM BR OVC007 
     FM231600 21012KT P6SM OVC015 
     FM240000 19008KT P6SM OVC020