LOS ANGELES (AP) — A second day of showers and thunderstorms in southern and central California was expected to bring heavy rain and set more rainfall records in what is usually a dry month.

Rain had already begun to fall Sunday afternoon in parts of Los Angeles County’s mountains, the valley north and inland urban areas to the east. Later in the day, the city was expected to get a repeat of Saturday’s scattered showers and occasional downpours as remnants of tropical storm Dolores off Baja California brings warm, muggy conditions northward.

READ MORE: Controversial New Report Says No Amount Of Alcohol Is Good For The Heart

“We have a chance of some more heavy rain in LA County this evening, thunderstorms, lightning, possibly some localized street flooding,” said National Weather Service meteorologist Joe Sirard.

Saturday’s rainfall broke records in at least 11 locations, including five places that had the most rain ever recorded on any day in July, Sirard said.

July is typically the driest month of the year in Southern California. Because of that, Saturday’s 0.36 inch of rain in downtown Los Angeles exceeded the 0.24 inch recorded July 14, 1886, which had been the wettest July day in nearly 130 years, Sirard said.

“It looks like we’re probably going to get more rain downtown this evening,” Sirard said. “It looks like there’s a good chance the monthly record is going to go up. Really, this is super historic.”

The record is especially significant, he said, because downtown Los Angeles has the longest recording climate station, dating back to July 1, 1877.

Saturday’s storm brought flash floods and power outages and turned Los Angeles County’s typically packed coast into empty stretches of sand when the threat of lightning forced authorities to close 70 miles of beaches. The popular Santa Monica Pier and its nearby beaches were also shuttered.

Last summer, a lightning strike killed a man at Venice Beach and injured about a dozen people.

READ MORE: Study: States With Weaker Gun Laws Have Higher Rates Of Firearm Related Homicides, Suicides

Los Angeles County’s beaches remained open Sunday, despite reports of thunderstorms in the mountains and western San Diego coast during the afternoon.

AJ Lester of the Los Angeles County Fire Department’s Lifeguard Division said he has been in touch with weather officials and was tracking rain reports.

Signs warned beachgoers to avoid storm drain flows into the ocean because of Saturday’s sometimes heavy rain. The Los Angeles County Department of Public Health recommends people avoid swimming within 100 yards of a storm drain for 72 hours after heavy rain.

“All storm drains flowed out yesterday, but it hasn’t rained much this year, so that doesn’t bode well for the water quality,” Lester said Sunday.

Warnings were also in place for high surf and strong rip currents on all south-facing beaches, including Venice, Santa Monica, Malibu, Zuma, Newport and Huntington, Lester said.

Meanwhile, the summer storm has helped firefighters advance on two wildfires that broke out Friday.

Muggy, moist conditions were expected to persist through Monday.

MORE NEWS: Oregon Man Arrested By Authorities After Chase Starting In Placer County

Copyright 2015 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.