LOS ANGELES (KABC) -- Southern California will see another day of pleasant conditions on Saturday, but then a big warmup will bring summer-like conditions to the region.
The warmup will be noticeable starting on Sunday when temperatures start pushing 80. The National Weather Service says Monday will be the hottest day of the warming trend when the valleys and Inland Empire will be in the 90s.
Cooler conditions arrive mid-week when temperatures could drop by more than 10 degrees.
But first, Los Angeles and Orange counties on Saturday will see a high of 74 and a low of 51. Monday is expected to be in the upper 80s.
The valleys and Inland Empire on Saturday will be sunny amid a high of 77 and a low of 48. There could be record-breaking highs on Monday when temperatures climb past 90.
Beaches on Saturday will be cool, with morning clouds and afternoon sunshine on tap. Expect a high of 65 and a low of 51.
Mountains will reach 61, dropping to about 32 overnight. Similar conditions are expected on Sunday.
Deserts will be sunny amid a high of 75 on Saturday. Monday will be in the upper 80s.
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