For those who stepped outside Wednesday before sunrise, the heat was already there.
Temperatures inland were in the upper 70s before the sun came up, and are expected to skyrocket when the overnight moisture fades, the National Weather Service said.
“It’s going to be plenty hot,” said Dave Bruno, a meteorologist with the National Weather Service.
The second heat wave this month is hitting Southern California – and it could be as bad as the last one, Bruno said.
The sustained heat is also increasing the danger of fast-moving wildfires, he said.
Shielded by clouds that kept the weather cooler than expected Tuesday, the region probably won't be as lucky Wednesday or going into the weekend, as heat flowing from Texas could break local records, Bruno said.