
The National Weather Service in San Diego has issued a weather advisory highlighting a shift in weather patterns over the coming days. According to the NWS San Diego, the region will witness a transition to onshore flow and cooler, cloudier weather this evening, persisting through Saturday. Additionally, Southern Californians should brace for offshore winds in the mountains and deserts, with potential gusts reaching 35-45 mph.
Residents woke up to a cold morning today with "temperatures to drop into the 30s already in many valley locations leading to patchy frost," as reported by the National Weather Service. Looking towards the weekend, coastal areas may experience drizzle and an isolated shower. In the deserts, they are forecasted to extend till Friday afternoon, resulting in 25-35 knots winds. Leaning into next week, there's the potential for Santa Ana Winds, although the NWS San Diego notes, "there is a big spread in possible outcomes that far out."
A separate analysis by the NWS shows a "very dry air" mass, allowing for effective radiational cooling in the region. As a result, forecast low temperatures for Thursday through Saturday mornings could plummet into the upper 20s and lower 30s for certain wind-sheltered valleys in San Diego and Riverside Counties. The National Weather Service further indicates that "temperatures will be slightly milder Friday morning for most San Diego County valleys but will still drop near freezing" for areas of the Inland Empire in Riverside County.