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LOS ANGELES (KTLA) — Southern California was in the midst of a heat wave on Friday, and the extreme heat was only expected to climb over the weekend.

The National Weather Service predicted record-setting and potentially dangerous temperatures across the Southland.

An excessive heat warnings was issued for several areas from Saturday morning through Sunday evening.

The affected areas included the San Fernando, San Gabriel, Santa Clarita and Antelope valleys, as well as the valleys of the Inland Empire.

Heat records in Palmdale and Lancaster, which are 113 and 114 degrees, respectively, could also be broken this weekend, National Weather Service specialist Stuart Seto said.

There were also excessive heat warnings for the mountain areas in Los Angeles, Ventura, Riverside and San Bernardino counties.

A marine layer should spare the coast from the most extreme heat, but temperatures were still expected to be in the 80s.

Authorities urged people to drink plenty of water and reschedule strenuous activities for the early morning or evening hours.

Pets should also be kept indoors or in shady areas. Children and pets should never be left in cars.

L.A. County has 89 cooling centers that are open to help residents beat the heat.

For cooling center locations, call the L.A. County Information line at 211, or view an interactive map here:

Get more information on heat waves and heath dangers here: