The air temperature is one of the most important climatic parameters, that define the geographic regions. The temperature regim is influenced by the infrared radiation and the transformation in heat at the contact with active surface, also by the atmospheric circulation, that air mases with different thermic characteristics succeed. Low temperatures are determined by the crossing to east of the country of the subarctic continental air masses or the maritim subpolar masses. High temperatures are determined by the tropical air masses that come from south-east, in the summer, or from west, in winter. For the spatialisation of the air temperature we used GIS programs: TNT Mips, ArcGIS 9.2 and SAGA.