According to other parts of the world extreme climatic phenomenon have passed beside Serbia. However, some of them appeared in our country. Beside extreme climatic phenomenon, extreme climatic seasons have great significance for geographic environment. During the 2007 July was has had high temperatures long lasted. The absolute maximal temperature has been achieved in Serbia. In Smederevska Palanka was registered 44.9°C. Those events deserves great scientific attention. in this paper we have considered in detailed those temperature conditions as unsuitable climatic phenomenon, especially in relation to range of extremity of temperature in Serbia.