After a brief respite with slightly warmer temperatures Friday, high heat was expected to return for much of the weekend across the Southland, prompting more warnings for residents to take precautions to avoid illness.
Forecasters said residents can anticipate “several degrees of warming in most areas Saturday,” with conditions about the same, or possibly slightly warmer, on Sunday.
“As a result, it will become dangerously hot away from the coastal plain,” according to the National Weather Service. “Max temps will rise well into the 90s to around or possibly slightly above 105 degrees in the valleys, foothills and lower mountain locations both days.”
An excessive heat warning will be in effect from 10 a.m. Saturday through 8 p.m. Monday in many mountain and valley areas. Forecasters said some areas could potentially reach as high as 108 degrees, while mountain and foothill areas might see overnight cooling only to the 75-to-85 degrees range.
“There is a high risk for dangerous heat illness for anyone, especially for the very young, the very old, those without air conditioning, and those active outdoors,” according to the NWS. “It will be very dangerous to perform strenuous activities during the late morning through early evening hours, including the weekend. Use extreme caution when hiking or biking anywhere in the warned area, including the popular Santa Monica Mountains.”
Excessive heat warnings will also be in effect until 8 p.m. Monday in the Santa Ana Mountains and Foothills, where temperatures could reach into the 90s.
A cooling trend is expected to settle in beginning Monday night and continuing through Thursday, although some areas will still see above-normal temperatures, forecasters said.
Thursday saw more temperature records fall in the Southland.
It was 104 degrees at Palmdale Airport on Thursday, breaking the record for the day of 100 set in 1980. It was 104 in Lancaster, breaking the record for the day of 100 set in 1980. It was the third day in a row record highs were reported in Palmdale and Lancaster.
It was 92 in Sandberg on Thursday, tying the record for the day set in 2020.