Residents in San Diego and the southwestern California region can expect a respite from the usual heat as the National Weather Service San Diego predicts cooler temperatures this week. According to NWS San Diego, temperatures will drop below the seasonal average leading to Friday, with "high temperatures for inland areas 10 to 15 degrees below average for today and Thursday."
The cooler clime comes courtesy of a low-pressure system making its laborious journey inland. The change comes not a moment too soon, as the inland valleys and mountainous regions are set to experience a 4—to 8-degree cooldown. This is a testament to how unpredictable regional weather patterns can poorly choose to defy typical seasonal trends. Gusty winds will also play their part, particularly "over the Mountains and Deserts through Thursday," with wind gusts maintaining through Thursday afternoon before calming down by late Friday morning, per the National Weather Service.
Night owls and early risers can look forward to denser marine layers as they deepen to around 3000 feet on Wednesday and Thursday, shrouding much of the coast and valleys with night and morning low clouds. Additionally, "the marine layer will begin to decrease in depth for Thursday night and Friday with coastal low clouds extending inland into portions of the inland valleys," as noted by a detailed Area Forecast Discussion released by the National Weather Service.
Looking ahead, the weekend offers slight warmth with temperatures "expected to increase slightly over the weekend," and a slight warming estimated at around 5 degrees for Friday and Saturday, claims NWS San Diego. The longer-term forecast hints at temperatures climbing further, with up to 10 degrees of warming for Monday through Wednesday of next week. Moreover, the early indication is that the region might see some hints of the monsoonal moisture returning later in the week, increasing chances of rainfall in places like Big Bear.
