Southern California continues to experience a pattern of dry and warm conditions, with the forecast showing varying temperatures across the region. Inland areas are seeing high temperatures around 5 to 10 degrees above average today, while coastal areas maintain near average temps. According to the National Weather Service San Diego, the coast and valleys range from the lower to mid-70s near the coast to the 90s for inland valleys. For the Apple and Lucerne Valleys and the lower deserts, temperatures reach 105 to 110 degrees.
As we head into Wednesday, the weather subtly shifts, forecasting slightly cooler temperatures. It is a few degrees cooler than Tuesday, a few degrees below average for the coast and western valleys, and around 4 to 8 degrees above average inland. The cooling effect is accredited to a slight deepening of the marine layer, expected to bring night and morning coastal low clouds further inland. Highs on Wednesday for the coast and valleys will range from the lower 70s near the coast to the mid-80s to mid-90s for the inland valleys.
The longer-term outlook from NWS San Diego maintains that this cooling trend will be brief. Temperatures are slated to rise slightly on Friday before dipping again over the weekend. This see-saw pattern is attributed to the dance of an upper-level low-pressure system off the coast and high pressure to the east. Meanwhile, the marine forecast keeps waterborne activities worry-free, with no hazardous marine conditions expected through Saturday.
Aviation concerns remain minimal, with marine layer-induced low clouds potentially reducing visibility to 0-5SM on higher coastal terrain and valleys until mid-morning. The scatter out should be 17-19Z, but there should only be partial or intermittent clearing at the immediate coast. Pilots are advised to anticipate similar conditions into Wednesday. As these patterns play out over the coming days, Skywarn activation is not demanded, though spotters are encouraged to report any significant climatic observations.
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