Meteorological observation at King Sejong station was carried out from February in 1988. Since then, some meteorological data reports which are observed and analyzed at the station are published through an annual report. Goals of this study are to arrange those scraps systematically, and to understand characteristics of meteorological phenomena at the station. Automatical observation elements are composed of wind, air temperature, station level air pressure, relative humidity, dewpoint temperature, horizontal global solar radiation, precipitation. These data are calculated as type of average, maximum, minimum, occurrence time of daily data. Elements of visual observations are consisted of meteorological phenomena of visibility, snow, fog, rain, cloud, blizzard, etc, In this study, meteorological data are collected and checked during 2002 Annual meteorological observation