Residents of Las Vegas should have their umbrellas ready, as the National Weather Service in Las Vegas, NV, predicts ongoing afternoon showers and thunderstorms throughout the weekend, especially in the southern and eastern areas. This forecast is due to persistent monsoonal moisture combined with above-average temperatures caused by a dominant high-pressure system, according to the National Weather Service.

Today through Sunday, there's a tempered expectation for precipitation with the chances for heavier showers and thunderstorms milder than previously thought, a somewhat of relief given the potential for heavy rain and flash flooding due to the trapped monsoonal moisture; however, with the high-pressure ridge stationary, lightning and gusty outflow winds still remain a threat, albeit with winds expected to be below severe limits, the high pressure is also facilitating slightly warmer weather across the region remaining slightly above normal throughout the weekend, as per National Weather Service.

Looking ahead into next week, the area will experience a transition as a forecasted upper-level trough moves onto the West Coast, purging the moisture and quelling the scattered shower and thunderstorm activity. The shift will result in drying of the region with normal to below normal Precipitable Water and a calming of the stormy afternoons, potentially leading to an all-dry scenario by midweek. While temperatures are slated to hover around average, breezy afternoon winds will still be noticeable, mainly on Monday with speeds expected between 25 to 35 MPH, though the impact of these winds remains low with a less than 20% risk of reaching over 40 MPH.

Aviation forecasts for Harry Reid and surrounding areas indicate subdued storm potential in the Las Vegas Valley for the afternoon with only a 15% chance, as per National Weather Service; meanwhile, 30-40% chances persist in the high terrain areas like the Spring Mountains, though not affecting the airport directly. VFR conditions should continue with light, variable winds and FEW-SCT clouds above 12,000 ft. Pilots and travelers might experience minor outflow winds from the west or south but gusts are predicted to stay under 20 knots.