Southern California will enjoy a brief respite from record-breaking temperatures for the next few days, but it probably won’t feel like it. High humidity will bring muggy and sticky conditions to the Southland this week, while a band of moisture could generate thunderstorms in the deserts, according the National Weather Service. On Monday, scattered showers will move throughout Los Angeles County and could bring dangerous lightning and flash flooding in the mountains and deserts, forecasters say. Temperatures will drop by 4 to 8 degrees in Los Angeles County and Ventura County on Monday and Tuesday.