 The station has a cold and dry climate , being located in a desert . The annual mean temperature is − 25 ° C ( − 13 ° F ) , with the summer temperature able to reach about 0 ° C ( 32 ° F ) and the lowest during the winter at − 50 ° C ( − 58 ° F ) . Storms , which can occur throughout the year , can occasionally make outdoor activity impossible . Being located south of the Antarctic Circle , Troll has midnight sun in the summer and polar night during the winter . 
