Aviation Digital Data Service (ADDS)

Output produced by METARs form (0531 UTC 21 April 2014)
found at http://aviationweather.gov/adds/metars/
 
KMHT 202321Z 2100/2124 15007KT P6SM SKC 
     FM210600 VRB03KT P6SM FEW140 
     FM211600 19007KT P6SM FEW130