High pressure will continue to weaken this weekend, bringing cooling to San Diego County, although it will continue to feel hot and humid, the National Weather Service said Saturday.
Isolated to scattered thunderstorms will occur mainly in the mountains
and deserts each afternoon through Monday, forecasters said.
A flash flood warning and a severe thunderstorm warning was in effect briefly Saturday for the southeastern part of San Diego County.
"Daytime heating and humidity have led to more thunderstorms over the mountains today. Main threats include brief heavy rainfall, lightning and gusty winds, - mostly for higher elevations," NBC 7's Meteorologist Crystal Egger said.
Saturday's high temperatures along the coast will be 81-86 with overnight lows of 67-72, forecasters said. Highs inland will be 92-97 with overnight lows of 65-70.
"Due to tropical moisture offshore, humid conditions will continue across the county so it will feel quite hot and muggy out there. The added moisture is also keeping our overnight temperatures elevated. While daytime highs are slightly cooler than last week, we are still running above normal," Egger said.
At 9 a.m., satellite images showed clear skies across Southern California. The mid-level clouds over the region overnight had largely moved to the north and west. Very little low cloud cover occurred overnight.
The atmosphere will begin to slowly dry out Sunday afternoon as the moisture moves to the northwest, which should decrease thunderstorms in the mountains on Sunday and Monday afternoon. Isolated thunderstorms are still possible in the mountains both of those afternoons, but they will be less widespread than previous days.