Aviation Digital Data Service (ADDS)

Output produced by METARs form (2328 UTC 16 September 2014)
found at http://aviationweather.gov/adds/metars/
 
KDCA 162327Z 1700/1724 35009KT P6SM FEW060 
     FM170200 02004KT P6SM SCT200 
     FM171500 07005KT P6SM SCT050 
     FM172000 13005KT P6SM FEW050