As the sun casts its relentless gaze upon Southern California, San Diego is bracing for a sweltering week ahead, with temperatures soaring above average, the National Weather Service said in a statement. Monday's weather in San Diego County is expected to reach highs in the lower to mid-70s near the coast and could climb into the 90s for the inland valleys, while the Apple and Lucerne Valleys face a scorching range of 100 to 110 degrees. Coastal Orange County will experience milder mid to upper 70s, but inland areas are prepped for upper 80s. The National Weather Service San Diego, CA, warns of "moderate to major heat risk" in the valleys and mountains and "major to extreme heat risk for the deserts."

Amid this blistering heat, the San Diego region is also looking toward a humidity spike and possible afternoon showers and thunderstorms in the mountains and deserts early next week as monsoonal moisture returns Monday through Thursday. This upturn in moisture could peak around Tuesday and Wednesday, according to the Area Forecast Discussion from the National Weather Service San Diego, CA. As this thermal onslaught persists, health officials are likely considering an extension of the Excessive Heat Warnings and Heat Advisories through around Thursday, given that some heat measures are anticipated to be higher in the upcoming week than the preceding weekend.

For those seeking refuge along the shoreline, the mornings may come with some respite in the form of coastal low clouds, which could reach into parts of the western valleys late each night. However, pilots should be wary as these conditions could lead to visibility constraints, with bases between 500-900 ft MSL expected to form alongside the coast, potentially causing visibilities to drop down to 1-3 SM over higher coastal terrain until mid-morning, followed by uncertainties for KSNA Sunday morning explained in the aviation section of the same report.

However, the ocean isn't entirely spared from the heat's grasp, for alongside the scorching temperatures, high tides could prompt minor tidal overflow, with tides nearing 6.7 feet this evening and swelling to about 6.8 feet on Sunday night, targeting susceptible low-lying areas like beach parking lots and boardwalks. Still, no hazardous marine conditions are expected through Wednesday, the weather service notes. Skywarn activation hasn't been requested yet, but spotters should stand by to report significant swings in our meteorological moods.