As the low-pressure system continues to affect California's weather, cooler and cloudier conditions are expected to linger across the region through Friday, with the most significant rainfall anticipated from Los Angeles County northward. According to NWS San Diego, today's highs will see the deserts experiencing temperatures around 5 degrees above average. In comparison, northern Orange County and the western Inland Empire could be 4 to 8 degrees below their usual marks. Coastal areas are predicted to range from 62 to 68 degrees, matching inland Orange County and western valleys.
Coming Thursday, temperatures will take a slight dip, falling a few to around 5 degrees cooler than Wednesday, as per the NWS Forecast Office San Diego. Expected highs for coastal areas will hover between 61 to 64 degrees, and inland counties, like the valleys, may face a chill, experiencing temperatures as much as 4 to 8 degrees below the usual average.
The light rainfall gracing southwest California is mostly attributed to a weakening atmospheric river directed by a persisting northern low-pressure system. The National Weather Service reports that the most voluminous rain will pour over Los Angeles County and areas beyond to the north, with lighter showers expected to the south across San Diego County. Rainfall amounts until Friday night could reach 1 to 2 inches along the south slopes of the San Bernardino County mountains, while the Inland Empire and Orange County might only see up to half an inch.
The weekend outlook seems somewhat brighter, bringing drier conditions through the start of next week. As higher temperatures are expected to return for the coast and valleys, slightly cooler air will brush mountaintops and deserts, chasing back any lingering clouds. "For Sunday, high temperatures for most areas will be within a few degrees of average, mostly in the 60s for the coast and valleys and in the mid 70s for the lower deserts," the National Weather Service San Diego CA forecasts.
Aviation and marine conditions remain more stable, with no severe weather impending through Sunday. For aviators, coastal basins will see flight visibility reduce at times due to low clouds and isolated showers, especially near KSNA and KONT, where the most significant effects are likely to occur. Desert slopes and deserts can expect clearer skies.
