The Great Basin desert is a part of Great Basin, its climate is Hot. dry and desert like. Weather conditions in park vary with the time. In early summer and late spring, valleys are hot at day time, yet snow packs are not melted in higher areas. At night Great Basin desert is humid and sharp drops in temperature, whereas in summer, thunderstorms are common at afternoon. But if we talk about snow it can appear at any time of the year at higher elevations.