A heat advisory will go into effect at 10 a.m. Tuesday in the Riverside metropolitan area as the season’s second heat wave envelopes the inland region.
A ridge of high pressure will dominate the area from Tuesday to Friday, with highs of 103 to possibly as high as 110 degrees each day in the lower deserts and into the 90s to near 100 degrees for the Inland Empire and inland valleys west of the mountains, according to the National Weather Service.
Wednesday and Thursday are expected to be the hottest days overall area-wide, the weather service forecast.
High temperatures could be 15-20 degrees above average in most areas by Wednesday, according to the weather service.
The heat advisory issued by the weather service will be in effect until 9 p.m. Friday. An excessive heat watch will also take effect Tuesday morning and last until Friday evening in the Coachella Valley.
“Expect a gradual moderation in temperatures beginning on Saturday,” the weather service said. “However, still expect max temps to remain above normal.”
The weather service recommended drinking “plenty of fluids, staying in an air-conditioned room (and) staying out of the sun” for the duration of the heat wave, which comes on the heels of another one just over a week ago.
The high temperatures typically trigger the opening of cooling centers, which include libraries and senior centers where people can escape the daytime peak heat, but Riverside County officials were not prepared to coordinate the openings at this point due to the coronavirus outbreak.
“We are working with the Office on Aging to connect seniors with services during this heat wave,” county Director of Public Health Kim Saruwatari said.
“Community Connect is a one-stop shop. By dialing 2-1-1 from any phone in Riverside County, seniors can be connected with a number of services that are available.”
Highs in Riverside will range from 96 to 99 degrees between Tuesday and Friday, while in the Coachella Valley, the mercury will top out between 105 and 108 degrees, and in the Temecula Valley, temperatures will peak in the low- to mid-90s, according to the weather service.
No rain is in the forecast for the next seven days, according to meteorologists.