 Even during the hottest and driest months of July and August, hot days lead to intensive evaporation of humidity and cloud formation.Almost every evening, aggregating clouds release some, often heavy, showers and remoisturize the environment.At night temperatures regularly drop down to just 4-6 °C (39-43 °F), and morning sunrays regularly have to cut through the dense fog, before they reach the east-facing slopes and provide heat necessary for functioning of this viper.