Aviation Digital Data Service (ADDS)

Output produced by METARs form (1831 UTC 30 January 2015)
found at http://aviationweather.gov/adds/metars/
 
KDCA 301733Z 3018/3118 32016G20KT P6SM SCT026 SCT070 BKN080 
     FM310700 31014KT P6SM FEW250 
     FM311100 31012G21KT P6SM SKC