The Inland Empire will bake under triple-digit heat this week, with highs reaching well over 110 degrees in the Coachella Valley, as some of the hottest temperatures of the year are expected throughout Southern California, meteorologists say.
An excessive heat watch will be in effect for Riverside, San Bernardino and Orange counties from Tuesday, Aug. 30, to Sunday, Sept. 4, according to the National Weather Service.
Alright everyone… let’s talk about the heat coming up this week 🥵
We’re looking at a pretty long duration heat wave affecting much of SoCal mid week through at least Labor Day Weekend.
Time will likely be the hottest we’ve seen so far this summer. (1/2) pic.twitter.com/jaQkP7cHer
— NWS San Diego (@NWSSanDiego) August 28, 2022
Palm Springs and Palm Desert will see daytime temperatures as high as 115 degrees Tuesday and Wednesday, only dropping to 112 by Sunday. Coachella will reach 113 on Tuesday and Wednesday and 111 both Saturday and Sunday, according to current forecasts.
Thermal will reach highs of 113 degrees Tuesday and Wednesday. Riverside will see a high of 102 degrees Wednesday and feel the most heat on Thursday with a high of 104.
Sunday’s highs were 89 degrees in Riverside, 106 in Palm Springs and 88 near Hemet, according to Mark Moede, meteorologist at the NWS. Temperatures are forecast to rise a few degrees on Monday before the heat wave begins on Tuesday.
Some of the highest temperatures are expected Thursday, Sept. 1, where highs should peak at 108 in San Bernardino, 104 in Ontario, 108 in Lake Elsinore and 99 in Anaheim, according to the NWS.
In Los Angeles County, most of the extreme heat is expected beginning Wednesday, Aug. 31, forecasters said. Temperatures from the coast and extending inland should range between 80 to 95 degrees and foothill areas of the Antelope Valley are likely to reach highs between 95 and 110 degrees.
Widespread and long lasting heat is expected inland from the immediate coast starting Wednesday and lasting through to next Sunday, with Thursday looking like the warmest. #CAwx pic.twitter.com/8oL21HJe41
— NWS Los Angeles (@NWSLosAngeles) August 28, 2022
The heat wave is the result of a low-pressure trough in the atmosphere being replaced by a high-pressure ridge over much of Southern California, the NWS said. The trough had been bringing a stronger onshore wind flow, a deeper marine layer and morning clouds to inland areas of Southern California, officials said.
Health officials advise residents to stay indoors with air conditioning whenever possible, drink plenty of fluids and avoid hiking or other strenuous activity in extreme heat.
Children and pets should never be left in unattended vehicles – not even for one minute.
The extreme heat and low humidity could create elevated fire weather conditions as well, the NWS said.
Cooling centers for Riverside County can be found at capriverside.org/cool-centers.
City News Service contributed to this report.