Eric Boldt, a meteorologist with the National Weather Service (NWS), said temperatures along the coast are expected to be in the mid-70s for much of the weekend. He said the mercury will jump significantly on Monday, some areas could see triple-digit highs, including San Fernando Valley, San Gabriel Valley, and Inland Empire.
Boldt said the heatwave will likely peak Wednesday but linger through the week:
“These high temperatures are going to continue pretty much through next week,” he said. “We might see a little relief toward Friday and Saturday, but it seems like the rest of May is going to be warm.”
For much of Southern California, temperatures will be above normal through the weekend into early next week.
NWS Los Angeles reports temperatures in the region will be around the mid-80s on Memorial Day, with cities more inland, such as Pasadena could see 90 degrees. For desert regions like Palm Springs, the mercury could climb to triple-digits next week.
Get ready for period of hot weather across much of SW Cal next week. Hottest areas will be interior locations including the Antelope Valley where an Excessive Heat Watch has been issued valid from Tue afternoon thru early Thu eve. Triple digit heat expected. #cawx #Socal #LAheat pic.twitter.com/qi7lfWLzJw— NWS Los Angeles (@NWSLosAngeles) May 23, 2020
Down the coast, the weather service issued an excessive heat watch for Coachella Valley, San Diego County Deserts and San Gorgonio Pass, indicating that triple-digit highs are expected next week:
...EXCESSIVE HEAT WATCH NOW IN EFFECT FROM TUESDAY AFTERNOON THROUGH FRIDAY EVENING...
* WHAT...Dangerously hot conditions. High temperatures 104 to 109 degrees Tuesday. Wednesday and Thursday will be the hottest days with high temperatures of 108 to 112 degrees expected.
* WHERE...Coachella Valley, San Diego County Deserts and San Gorgonio Pass Near Banning.
* WHEN...From Tuesday afternoon through Friday evening. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for sensitive groups and those working or participating in outdoor activities.
🔥 Hot weather incoming next week 🔥— NWS San Diego (@NWSSanDiego) May 22, 2020
A long-duration heat event is in store for the valleys and deserts next week, with Tue-Thu as the hottest days. The lower deserts could see highs up to 113 degrees on Wed/Thu.
Stay cool and hydrated, especially if you will be outside! #cawx pic.twitter.com/xY0gYoHaan
SoCal folks will have to flock to the coast to get some relief for the next seven days. Some beaches in Southern California have opened up with new social distancing rules (and by the way, some residents are not happy).
Rising temperatures are expected across the state through end month
Average temperatures are going to be way above normal for much of the lower West Coast into the first week of June.
A surge in temperatures suggests western cooling degree day (CDD), a measurement designed to quantify the demand for energy needed to cool buildings, is expected to jump above trend on May 24 and peak on May 28, returning to below-average trend in the first week of June.
Rising western CDD means average daily electrical load and hourly load forecasts for Western Electricity Coordinating Council (WECC), which includes Northwest Power Pool, Southwest Reserve Sharing Group, Rocky Mountain Reserve Group, California-Mexico Power Area (without Mexico), are expected to see above-trend demand as people turn on their air conditioners.
Energy demand is set to skyrocket in the West because of the incoming heatwave -- power prices will do the same.