Las Vegas is one of the driest cities in the United States, but it typically sees its highest precipitation during February and the "monsoon" window of July and August. February is historically the wettest month of the year, driven by Pacific winter storms that bring an average of 0.8 to 1.3 inches of rain. In 2026, climate patterns have continued to show significant "flash" activity during the summer months, where sudden, intense thunderstorms can drop a month's worth of rain in just an hour. While these "wet" months are relative—Las Vegas only averages about 4 inches of rain annually—travelers in late winter and late summer are the most likely to encounter rain. For visitors, this rarely ruins a trip, but it can lead to spectacular lightning displays over the desert and the rare sight of snow on the nearby Spring Mountains, providing a dramatic contrast to the neon lights of the Las Vegas Strip.