Aviation Digital Data Service (ADDS)

Output produced by METARs form (2247 UTC 28 November 2014)
found at http://aviationweather.gov/adds/metars/
 
KBOS 282117Z 2821/2924 31013KT P6SM BKN050 
     FM282300 30011KT P6SM SCT250 
     FM291700 24005KT P6SM BKN250