Las Vegas is famously dry, but it actually has two distinct periods that could be considered its "rainy seasons." The first and most consistent period occurs during the winter and early spring, from December through March. During these months, the city receives the majority of its roughly 4 to 5 inches of annual rainfall, usually in the form of light, steady drizzles associated with Pacific storm fronts. The second "rainy" period is the Summer Monsoon season, which typically runs from late June through mid-September. Unlike the winter rain, monsoon storms are characterized by intense, sudden thunderstorms that can produce heavy downpours and lightning in a very short amount of time, sometimes leading to localized flash flooding. In 2026, while rain remains rare (with nearly 300 sunny days a year), travelers should be most aware of the August and September storms, as they can be quite dramatic even if they only last for an hour. Despite these "rainy" windows, Las Vegas is designed to be an indoor-centric city, so a little water rarely disrupts the entertainment, dining, or gaming activities found along the world-famous Las Vegas Strip.