As Southern California braces for a week characterized by marine layers and fluctuating temperatures, San Diegans are advised to keep a sweater handy for the cooler evenings and a pair of sunglasses for the sunnier days ahead. The National Weather Service forecasts a slight dip in temperature before a gradual warming trend takes us into the weekend, signaling a typical autumn week in the region. "There will be cooling for the inland valleys onto the coastal slopes of the mountains today due to stronger onshore flow and deepening of the marine layer," according to the National Weather Service in San Diego.
For those living along the coast, expect highs in the mid-60s to low 70s through Wednesday, dipping slightly below the average for this time of year. On the contrary, those residing in the low deserts can anticipate temperatures to hover a few degrees above typical, nearing the 90-degree mark. As reported by the Area Forecast Discussion, "inland valleys onto the coastal slopes of the mountains on Wednesday will experience a decrease in temperature due to the strengthening onshore flow across southern California."
Looking ahead, "Onshore flow will begin to weaken on Thursday with high pressure aloft strengthening over California for next weekend. Greater warming will spread inland on Friday with a slight additional warming on Saturday," as shared in the same discussion by the National Weather Service. The low-pressure system making an entrance on Wednesday promises cooler days before ceding to the strengthening high pressure, which brings the warmth back.
Meanwhile, a day-to-day breakdown of the weather might include patchy morning fog, particularly before 10 am, and increasing clouds at night, accompanied by calm winds, as depicted in the detailed forecast by the National Weather Service. Taking a closer look at Tuesday, for instance, it's anticipated to see patchy morning fog followed by gradual clearing towards the afternoon, with a high near 72 degrees. As the pattern persists, the comfortable temperatures provide a reprieve for the low deserts, synonymous with their higher-than-average warmth.
