Temperatures are expected to rise today across much of Southern California, part of a warming trend that will see the potential for triple-digit heat in some areas by mid-week and above-normal temperatures into at least Thursday.
Tuesday’s temperatures should roughly mirror Monday’s, but the hottest days are expected to be Wednesday and Thursday, peaking on Wednesday.
“The valleys will see max temps from 95 to 103 degrees, 15 to 20 degrees above normal,” according to the National Weather Service. “… Warmer than normal highs and lows will combine to bring moderately dangerous heat conditions to the valleys and lower mountain elevations.”
Graphic courtesy of the National Weather ServiceForecasters urged people planning outdoor activities on Wednesday and Thursday to “take precautions to avoid heat-related dangers.”
A heat advisory will take effect at 11 a.m. Tuesday in the Santa Monica Mountains Recreational Area, Calabasas, Agoura Hills and the San Fernando Valley, continuing until 9 p.m. Thursday.
A separate heat advisory will be in place from 11 a.m. Wednesday until 9 p.m. Thursday for the Santa Clarita Valley, San Gabriel Valley and Los Angeles County coastal area stretching to downtown Los Angeles.
All the affected areas could see triple-digit heat, forecasters warned.
“There is a high risk for heat illness for sensitive populations including the very young, the very old, those without air conditioning, and those active outdoors,” according to the NWS.
A cooling trend is expected to begin Friday, and continue into the Memorial Day weekend, with the most significant drop occurring Saturday, returning temperatures to “a few degrees either side of normal,” followed by a few degrees of warming on Sunday.
Meanwhile, in the Riverside and San Bernardino County valleys, temperatures on Tuesday will reach the mid-90s, with triple digits expected in the Coachella Valley.
The high in the valleys and Inland Empire will be 94 Tuesday and rise Wednesday to 97 and Thursday to 95.
Light winds from the southwest will be around 10 to 15 mph with gusts to 25 mph Tuesday. But the winds will die down Wednesday and Thursday.
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The mountains will be warm and windy with highs between 79 and 87.
It will be sunny in the Coachella Valley with highs around 101 Tuesday. It will be sunny and hot on Wednesday with highs between 103 and 106.
Temperatures are expected to be in the triple digits in the Coachella Valley until Memorial Day.
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