San Diegans are experiencing a reprieve from the typical warmth this week, with temperatures dipping significantly below average. According to the National Weather Service (NWS) in San Diego, coastal areas can expect highs around 70 degrees, while the inland valleys will see temperatures in the 70s. The Inland Empire's mercury is poised in the mid-70s to the lower 80s, and the Lower Deserts sit around the 90s.
However, this cool spell might soon be interrupted by some light showers, ushered in by a low-pressure system from the northwest progressively moving across the region into Friday; this may bring a bit more water to the coastal waters and mountains, creating a slight damper for some, the NWS describes conditions in which chances for measurable precipitation is generally around 25 to 35 percent for the coast to the mountains, and in terms of heavier rainfall, chances for one-quarter inch or more of rainfall around 5 to 10 percent. But the system will weaken, making way for a hotter weekend and early next week, with temperatures expected to climb above average again.
The NWS forecast discussion further expands on the weather outlook, signaling that high temperatures will go from a few to around 5 degrees below average on Saturday to a few degrees above average on Sunday. Warming will continue with expectations of around 5 degrees above average on Monday and Tuesday for many areas. However, there is a greater spread across California for Monday through Wednesday of next week, ranging from weaker low pressure to weaker high pressure. Offering a brief respite before conditions heat up again, the coast-to-mountain ridges can expect patchy low clouds in the morning for those venturing outdoors, which should clear up after 16Z.
The outlook appears benign for mariners and the boating community as the NWS assures no hazardous marine conditions are expected through Sunday. Despite the fluctuating atmospheric activity inland, the aviation sector should know that patchy low clouds may reduce visibility along the coast before broader clear skies take over. Skywarn activation has not been requested. However, local weather spotters are encouraged to report any significant meteorological occurrences.
