The Puget Sound area is preparing for an extended period of marine layer influence, which will result in significant cloud cover and cooler temperatures. This typical coastal weather pattern develops when moist, cool air from the Pacific Ocean is trapped under a layer of warmer air, producing overcast conditions. The marine layer is predicted to remain in the area for several days, which will have an impact on visibility and temperature. Residents should expect lower daytime temperatures because the dense cloud cover will prevent direct sunlight from reaching the surface. High temperatures are anticipated to remain below the seasonal average, providing a break from warmer weather but possibly disrupting outdoor activities.