Aviation Digital Data Service (ADDS)

Output produced by METARs form (0958 UTC 22 May 2015)
found at http://aviationweather.gov/adds/metars/
 
KDCA 220839Z 2209/2306 29006KT P6SM FEW040 
     FM221400 29013G19KT P6SM FEW250 
     FM230200 32009KT P6SM SCT250