More Rain, Humid Heat To Stick In SoCal On Heels Of Deadly Flash Flooding

LOS ANGELES, CA — A tropical humidity that has thickened the air around the Southland for the past week isn't leaving anytime soon, according to the National Weather Service.

Forecasts this week show another round of humid heat and a chance for more rare September rain as more tropical moisture rolls across the region.

While this week's weather isn't expected to feature heavy rain anywhere in the Southland, some precipitation could materialize in Los Angeles County, and a slight chance of thunderstorms could return to areas north of San Diego County, forecasters said. Mountain areas are also more likely to see rain.

Elsewhere, high temperatures and muggy air are forecast, with Tuesday expected to be the hottest day of the week. Patchy fog is expected to cling to the coast beginning Monday night and into Tuesday night.

In LA County, rain is most likely to fall on Tuesday and Wednesday.

"Shower and thunderstorms are possible anytime through Wednesday, with [Tuesday] afternoon through [Wednesday] afternoon having the highest chances," the National Weather Service, Los Angeles wrote on X. "Impacts likely to be minor but could shift as we get closer to Tuesday. Continue to monitor for the latest updates."

Here are some of the expected highs on Tuesday:

Mission Viejo: 88 degrees

Laguna Beach: 77 degrees

Downtown Los Angeles: 88 degrees

Pasadena: 91 degrees

Long Beach: 82 degrees

Carlsbad: 76 degrees

Santee: 88 degrees

Temecula: 91 degrees

Banning: 92 degrees

Palm Desert: 100 degrees

The humidity lingers in the wake of Tropical Storm Mario, which brought widespread rainfall to the Southland last week, with precipitation levels varying across different areas.

When heavy rain swept the region on Thursday, the inland areas east of Los Angeles were left in turmoil, with dramatic footage capturing floodwaters and mudslides swallowing roads, damaging homes and washing away vehicles.

In Barstow, a two-year-old boy was swept away and killed by floodwaters, a 20-hour search concluded. The boy, identified later as Xaviar Padilla, was reportedly in a car with his father when floodwaters swept them away. His body was discovered in a city flood control channel.

A flood watch was issued to cities in the Inland Empire and many others across Southern California. The storm was expected to bring several inches of rain to the Southland and parts of Mexico.

There were multiple incidents of mudslides and flooding during Thursday night's storm as torrential rains fell in some parts of the Southland. In Oak Glen, six vehicles were reported trapped by mudslides, and 15 people were sheltering along the roadside.

READ MORE: Residents Shelter In Place As Mudslide Rips Through Oak Glen Near Beloved Steakhouse