Marine layer over La Jolla Shores
The marine layer over La Jolla Shores. Courtesy HPWREN network

The San Diego region can expect drier conditions Monday before monsoonal activity builds later in the week, according to the National Weather Service.

“Drier and more stable conditions will prevail today with a few thunderstorms returning to the mountains for Tuesday afternoon,” the weather service said.

“A greater influx of moisture will bring more thunderstorms for the mountains into the deserts for Wednesday and Thursday afternoons,” the agency added.

Highs on Monday are forecast to be in the mid 70s near the coast, around 80 inland, the lower 80s in the western valleys, the lower 90s near the foothills, the lower 90s in the mountains and 98 to 108 in the deserts.

Longer-range outlooks show hotter conditions toward the end of the month as an upper high becomes established over the southwest, forecasters said.

City News Service contributed to this article.