Aviation Digital Data Service (ADDS)

Output produced by METARs form (1742 UTC 21 November 2014)
found at http://aviationweather.gov/adds/metars/
 
KIAH 211725Z 2118/2224 14013KT P6SM -SHRA SCT020 BKN045 
     FM211900 14012KT P6SM VCSH SCT030 BKN045 
     FM220000 12012KT P6SM SCT025 OVC050 
     FM220300 11010KT P6SM BKN025 
     FM220900 12010KT P6SM VCSH OVC020 
     FM222100 12010G18KT P6SM VCTS BKN025CB OVC040 
     TEMPO 2221/2224 3SM SHRA OVC020