Get ready for the heat to return to Southern California.
Triple-digit temperatures, muggy conditions and even thunderstorms are being forecast to return to Southern California this week. The National Weather Service issued an excessive heat warning on Monday with temperatures possibly reaching 109 degrees in the Antelope Valley and 106 in the valleys.
According to the weather service, you can thank an upper level high pressure system and weak northernly winds for the intense heat. A monsoonal flow pattern will emerge on Tuesday, bringing humid conditions along with a chance of thunderstorms along the San Gabriel and Santa Barbara County mountains.
"Expect humid and hot conditions to continue through much of the week. There will be little relief from the heat overnight away from the coast through much of the week," meteorologist Curt Kaplan said in a statement.