In this master thesis, the program WUFI (a software developed to simulate hygrothermal processes in parts of buildings) is used for the first time to simulate rock moisture and temperature on the rock surface in the Gesäuse National Park without direct measurements of the climate parameters on the rock face. For this simulation, the monthly mean values of temperature and the monthly values of precipitation are interpolated based on GIS. The calculated gradients are used to correct the hourly values of the climate stations. Other simulation relevant climate data are obtained from weather stations. Due to missing precipitation data from higher regions, it is impossible to perform an interpolation, and because of that, INCA data from the ZAMG are used. Wind direction and speed are also obtained from INCA. Due to the significance of the simulation of rock moisture and temperature, as well as the interpolation of temperature and precipitation, a detailed description of the interpolation method according to Kriging and digital terrain models, which are essential for these interpolations, is provided. 72 virtual measuring points are spread throughout the Hochtor mountain range depending on exposition, inclination and altitude. For each point one climate-file for the simulation program was created. An essential factor for these simulations is information about the rock parameters, which were categorized by Schnepfleitner (2012). Additionally, the factor of the wind-driven rain for the Gesäuse National Park by Zinner (2014) was included and used for the simulations. The results are analogous to those, which were simulated with measured climate parameters: north-facing rocks are damper than the south-facing ones and in south-orientated regions more freeze-thaw cycles take place. As a further result, it was discovered that the ice segregation theory has a much greater potential for rock weathering than the classic freeze-thaw cycle theory.