Cooler weather is expected in San Diego County this weekend, with areas of night and morning low clouds and patchy fog well inland clearing to allow sunshine in most areas, the National Weather Service said.
A warming trend will begin Monday as high pressure builds, forecasters said. Temperatures could be well above average by midweek.
Swimming was expected to be hazardous at some beaches Saturday due to elevated surf and dangerous rip currents
High temperatures along the coast Saturday were predicted to be in the mid-70s with overnight lows in the mid-60s. Highs in the western valleys were expected to be in the lower 80s, and in the upper 80s near the foothills with lows in the lower 60s. Highs in the mountains were expected to be around 90 with lows in the mid-60s and highs in the deserts were predicted to be 97 to 107 with lows in the mid-70s.
Peak heat likely will arrive Wednesday and Thursday, when highs are forecast to be some 5-10 degrees above average.
As the ridge weakens late in the week, some weak monsoon flow was predicted.
At county beaches, a 3-foot south swell might generate elevated surf and a high rip current risk through Sunday. The highest surf may be on south- facing beaches, mainly in far northern San Diego County, where highest sets could reach 7 feet. A beach hazard statement remains in effect through Sunday afternoon.
Some modest cooling was possible into Labor Day weekend as the high weakens and opens the door to a weak monsoon flow, but confidence in this pattern bringing any precipitation was low.
–City News Service