Temperatures will reach triple-digit territory in LA County Monday as a ridge of high pressure keeps the heat somewhat above normal.
However, the deviation from average temperatures will not be huge. Downtown LA, for instance, will reach a high of 91 degrees Monday, compared to the average, which is 84. Woodland Hills, where 96 is normal for this time of the year, will reach 100 Monday.
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Highs are also above normal in Orange County. Coastal communities, where the mid 70s are the norm for this time of the year, will reach the high 70s and low 80s Monday. Inland temperatures in Orange County will reach the low 90s, about 10 degrees above normal.
Monday's weather could feel hotter than it is due to the humidity level across much of LA County -- it could be 30-40 percent.
NBC4 Meteorologist Shanna Mendiola says temperatures will warm a degree or two through Wednesday, which should be the warmest day of the week ahead for most.
Partly cloudy skies in LA County were forcasted Monday, and highs of 81 at LAX; 82 in Avalon; 87 in Long Beach; 88 on Mount Wilson; 91 in downtown LA; 93 in San Gabriel; 94 in Burbank; 95 in Pasadena; 96 in Saugus; 100 in Woodland Hills; 102 in Palmdale; and 103 in Lancaster.
Moonsoonal moisture from Mexico, meanwhile, may produce showers and thunderstorms Monday, including in the Antelope Valley.
Partly cloudy skies were also forecast in Orange County, along with highs of 77 in San Clemente; 81 in Newport Beach and Laguna Beach; 89 in Irvine; 90 in Anaheim; 91 in Mission Viejo; 92 in Fullerton; and 93 in Yorba Linda.
Temperatures will be about the same through Sunday in both LA and Orange counties.