San Diego residents should prepare for a bout of hot weather today, with the National Weather Service San Diego anticipating temperatures to climb above the 110°F mark in the low deserts and approaching 100°F for the Inland Empire. According to the NWS San Diego, the heat brings a moderate risk for heat-related illnesses, particularly for individuals sensitive to high temperatures, underscoring the importance of effective cooling and adequate hydration.
While the coast may enjoy a reprieve due to a shallow marine layer moderating temperatures, inland areas aren't as fortunate. The NWS states that an "Excessive Heat Warning has not been issued" despite the soaring temperatures forecasted for today. Meanwhile, the marine layer that's been influencing the coastal regions at night and during the mornings, blanketing up to 15 miles inland, should start to clear later this morning, leading to "foggy conditions" particularly along the I-15 corridor, as described in the Area Forecast Discussion from National Weather Service San Diego.
Looking ahead, temperatures are expected to begin a gradual cool down starting west of the mountains tomorrow, a trend extending into the mountains and deserts by Wednesday. Even as we anticipate this respite from the heat, the forecast suggests the possibility of a few showers or even a thunderstorm in the higher terrain and deserts by Tuesday afternoon, though this remains a slight chance, as reported by an NWS San Diego forecast discussion.
Transitioning towards the weekend, a flattening of weather patterns is projected to bring slightly below-average temperatures for this time of year, according to the NWS San Diego discussion. With this shift, the marine layer is expected to deepen and stretch further inland overnight, although full clearing is likely in the afternoons. For San Diegans eager for updates on their July 4th plans, Independence Day is forecasted to be partly sunny with highs around 74, as per the 7-Day Forecast specifics. Meanwhile, those with weekend outdoor activities on their calendars can look forward to partly sunny conditions, with daytime temperatures hovering in the mid-70s.
