As the week progresses, San Diegans should expect a mixture of seasonal coolness giving way to notable warmth. According to the National Weather Service's San Diego forecast, "Seasonal temperatures will continue through Wednesday," followed by a significant rise in temperatures as high pressure aloft descends over California. This trend suggests a gradual temperature climb is to be expected by residents, with the coming days ushering in highs that may reach "10 to 15 degrees above average for the Inland Empire" from Thursday into Friday.
While inland areas will bask in the heat, coastal residents will experience a modest range of temperatures. "For the coastal areas: 67 to 73," reported NWS San Diego in a recent social media post, with "western valleys and inland Orange County: 73 to 78," denoting a comfortable climate away from California's typically ardent summertime heat. NWS San Diego also specified that high deserts will swelter at 85 to 92 degrees, while low deserts are predicted to hit a toasty 96 to 101.
Looking ahead to the weekend, the forecast becomes nuanced as an "upper level low pressure system off the Baja coast could draw some tropical moisture northward," leading to a potential for showers, particularly "over the mountains and on Sunday," as noted by NWS San Diego's synopsis. With this system, temperatures will pivot, ushering in a cooling trend from Saturday through Tuesday. The mountains may feel the brunt of this change, with a decrease in high temperatures "as much as 10 to 15 degrees below average."
For aviators, visibility may sometimes be compromised with "Low clouds based around 1500-2000 feet MSL" affecting the coastal basins until expected to scatter out between 17- 19Z, as stated in the NWS forecast. Additionally, boating conditions remain relatively stable, with "No hazardous marine conditions are expected today through Saturday," paving the way for steady sea-faring activities off San Diego's shores.
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