In the thesis, we compared the climate characteristics for the meteorological station Žiar nad Hronom, which is located in the 2. forestry vegetation zone at altitude 235 m asl., and the mountain meteorological station Telgárt located in the 6. forest vegetation zone at altitude 901 m asl. We evaluated warm half-year season within the years 2009-2018. Except of the evaluation of the station itself, we looked deeper into capturing the development of the climate and occurrence of the climate extremes. In the theoretical part, we described the history of bioclimatology and elucidate the means of the measurement of the observed values. All data necessary for the research were obtained from the official internet page of SHMÚ. The values – air temperature, total precipitation and sunshine were processed into summary graphs independently for each year of the observed period. We also added values from the long-term averages from 1951-1980, which provides better overview of the climate development for us. We can state, according to the obtained data, that the average temperature (in comparison with the long-term averages) rises for both of the stations and the occurrence of the weather extremes is more and more frequent. The average temperature for the Ziar nad Hronom station raised more and we also observed more cases of extreme cases of draught or humidity. Despite of these facts, the temperature differences between the two mentioned stations stays unchanged.