Aviation Digital Data Service (ADDS)

Output produced by METARs form (0704 UTC 21 April 2014)
found at http://aviationweather.gov/adds/metars/
 
KPWM 210520Z 2106/2206 21004KT P6SM SCT250 
     FM211500 19013G20KT P6SM SCT250 
     FM212300 21005KT P6SM BKN250