Aviation Digital Data Service (ADDS)

Output produced by METARs form (1015 UTC 27 March 2015)
found at http://aviationweather.gov/adds/metars/
 
KIAD 270852Z 2709/2812 33012KT 4SM RA SCT015 OVC025 
     FM271400 35007KT P6SM OVC045 
     FM281100 33011KT P6SM BKN250