It might be a wet Labor Day weekend in Las Vegas. Maybe

It might be a wet Labor Day weekend in Las Vegas. Maybe If you are planning outdoor activities for Sunday in Las Vegas, check the forecast first. Conditions could be cooler and wetter than usual. The strongest chances of any rainfall across Southern Nevada during the Labor Day period are expected on Sunday, said Brian Planz, a meteorologist with the National Weather Service office in Las Vegas. “If it does rain, it won’t be a lot, about 0.25 inches or less,” he said. “And the high temperature may not top 90 degrees.” He added that the average high for early September normally sits in the mid‑90s. However, Planz emphasized that the rain prospects are “not a direct result” of Hurricane Marie, which is spinning well off the southwest Mexico coast and moving northwest. He described the setup: a low‑pressure system off the California coast is interacting with a high‑pressure system to the east of Las Vegas. Moisture drawn from a very warm eastern Pacific will be funneled between the two features this weekend, affecting the Southwest. “There’s an ‘abundant amount’ of moisture in that region,” Planz said. The eastern Pacific has seen an active hurricane season so far, with Tropical Storm Lowell currently threatening Hawaii. The state was battered by Tropical Storm Lala last month. How much rain actually falls in the valley and exactly when it arrives depends on numerous variables, Planz noted. He stressed that Las Vegas will not see a repeat of the September 2023 event when a weakened Tropical Storm Hilary soaked the area and triggered flooding in the Spring Mountains and Death Valley National Park. Planz characterized Labor Day as “relatively dry,” with highs expected in the 90s, and noted that additional monsoon‑type storms could develop later next week. Weak monsoon season The monsoon season, which began in late June and runs through September, has been almost absent across the valley during an especially dry year. In August, the airport recorded 0.18 inches of rain, its wettest month since February (0.35). The typical August average is 0.32 inches. Reid has logged 0.69 inches of precipitation so far in 2026, compared with a normal total of 2.64 inches through late August. Reid recorded no measurable rainfall in July. On June 23 the airport measured 0.02 inches of rain, ending a rainless streak of 124 days; that was the month’s only precipitation. Changes may be on the horizon for September. The Weather Service’s Climate Prediction Center stated that “an unsettled pattern and above‑normal precipitation are favored for the West through mid‑September. Potential for tropical moisture could produce heavy rainfall for some areas, particularly the Southwest.” Historically, Las Vegas averages 0.32 inches of rain in September. Last year the valley received 0.28 inches. By Mark Davis