The climate is one of the natural factors that influence the touring phenomenon, because of the continuous modification of the landscape appearance and of the way we perceive it. The lowest annual average temperatures are on the crests of the Paring Mountains, at over 2500 m height (-2° C). At lower altitudes, of 1000 -1500 m, the annual average value is 4-6° C, and in the Petrosani Depression is 7.7° C. During summer these values can reach 16° C in the Petrosani Depression, 10 -14° C in the lower alpine area and 6-8° C on the higher peaks. During winter, the temperature at the top is - 10° C, in the lower alpine area -6,-8° C and - 4° C in the Petrosani Depression. The Jiu Valley is an area with cool summers; with maximum temperatures under 3° C. However, the minimum values are not less than -29° C. The number of days with snow is of 80 - 85/year in the higher alpine areas, around 40 days/year in the middle alpine area and 20 - 23 days/year inside the depression. In the Petrosani Depression the air calmness is about 68% of a year, compared to just 40% on the mountain peaks.