Aviation Digital Data Service (ADDS)

Output produced by METARs form (2133 UTC 20 December 2014)
found at http://www.aviationweather.gov/adds/metars/
 
KORD 202002Z 2020/2124 21004KT P6SM SCT045 OVC070 
     FM210600 19005KT P6SM OVC030 
     FM211400 18012G18KT P6SM SCT012 OVC018