In order to contribute to the project "ALPCHANGE - Climate Change and Impacts in Southern Alpine Regions" (cf. http://www.alpchange.at) this study shows the average conditions and long-term developments of four climatological parameters (mean air-temperature, precipitation sum, sum of freshly fallen snow and maximum snowdepth) at six selected high-altitude sites within the area of interest of the project - partly located in the Hohe Tauern National Park - in the mountains of central Austria during the period 1961 to 2006 (sum of freshly fallen snow for 1971 to 2006). The local data base consisted of monthly values from 44 observational meteorological stations nearby the six study sites. The data was provided by the Central Institute of Meteorology and Geodynamics (ZAMG), the Hydrographical Bureaus (HZB) of Styria, Carinthia, Tyrol and Vienna as well as the Austrian Hydro Powers (AHP). Conditions and trends of the four climatic elements were investigated by applying different statistical approaches. Correlation analysis and relations to reference stations were used for filling data gaps, linear regression to calculate the conditions at reference altitude 2500 m a.s.l. and the overall linear trend. The statistical significance was tested with signal-to-noise ratios and Students t-tests (95% confidence limit). The annual average conditions at the reference altitude reveal a decreasing pattern from the center (Hohe Tauern Range) towards the margins (Niedere Tauern Range) of the Eastern Alps. The mean annual temperatures are ranging from -1.7 to -2.0C, the annual precipitation sums are varying between 2100 and 1900 mm and the annual sums of the snow parameters are calculated between 2200 and 1200 cm. The results indicate a significant temperature rise of mean annual temperatures of 1.3 to 1.4C. The trends of mean annual precipitation, sum of freshly fallen snow and maximum snow depth are not significant but predominantly negative for the latter two parameters.