San Diego residents can expect a reprieve from the recent erratic weather as conditions stabilize, according to the National Weather Service Forecast Office San Diego. Today, most areas see temperatures returning to near or below the usual range for mid-August, bringing some expected normalcy after an array of monsoonal moisture.
The Area Forecast Discussion indicates one last day of thunderstorm chances in the mountains and deserts this afternoon and early evening. The forecast also mentions a deepening marine layer with patchy coastal low clouds and fog persistent through the week, particularly noticeable in the mornings. A lingering trough over Northern California is said to bring in cooler, drier air throughout the region, aiding in decreasing monsoonal moisture.
Further insights from the discussion reveal that humidity should drop as dry southwest winds prevail from Tuesday onwards, maintaining daytime temperatures close to average. This should make midweek conditions more comfortable, especially during nighttime hours. However, the potential for thunderstorms in the southern mountains and deserts remains today, with roughly a 15 percent chance near Riverside and San Diego counties, as stipulated in the report.
The marine layer's dominance will be a recurring theme, with the 7 Day Detailed Forecast predicting patchy fog in coastal areas before 11am today and returning after 11pm. The rest of the week follows a similar pattern leading to relatively consistent weather conditions, with daytime highs staying in the upper 70s. As the weekend approaches, the forecast suggests that temperatures might dip slightly below average, pending the exact positioning of a deepening trough over British Columbia.
Local aviators should note the advisory regarding scattered to broken clouds at or above 10,000 ft MSL through Tuesday morning, with a slight chance of isolated thunderstorms today. Airport operations along the coast will likely experience 30-40% chance for ceiling impacts in San Diego County between 12Z-15Z this morning. Predictably, the conditions will improve as the patches of low clouds give way to clearer skies later in the day.
