San Diego County is set for a weekend warm-up, as the National Weather Service in San Diego projects a slight increase in temperatures following a chilly period that saw temperatures drop significantly below average. According to the National Weather Service in San Diego, coastal regions are expected to see temperatures 5-8 degrees below normal today, while the mountains and deserts will experience a 10-20 degree deficit. However, moving into Sunday and Monday, a gradual rise in temperatures is anticipated, with highs still around 5 degrees below the norm at the coast and valleys and up to 10 degrees below in the higher elevations and arid regions.
The temperature dip came on the back of a "deeply amplified trough," which has brought scattered showers across the area, most of which will cease by sunrise. With clearer skies expected in the northern counties overnight, temperatures fell briskly, and frost advisories have been noted, particularly in wind-sheltered valleys, where the lows are anticipated to strike a chilly chord.
Meanwhile, San Diego’s mountains and deserts are bracing for gusty onshore winds beginning Sunday afternoon, shifting offshore by Monday. While Monday could potentially carry "a very slight chance of light showers" mainly focused on the San Diego County Mountains, the forecast remains largely dry, promising brighter days ahead as high pressure is expected to build over the Southwest starting on Tuesday, signaling warmer conditions that could endure through Thursday or even Friday.
Maritime conditions have also commanded attention, with the National Weather Service maintaining a Small Craft Advisory through the morning due to "west to northwest winds of 15-25 kt and gusts of 20-30 knots," producing choppy seas. Concerns for strong gusts that could create hazardous conditions at sea extend into Sunday afternoon and evening, especially in the outer coastal regions; as far as beachgoers, the coast saw heightened surf that is predicted to ebb throughout the day; this led to the issuing of a High Surf Advisory for San Diego County and a Beach Hazards Statement for Orange County, set to expire Saturday morning.
