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LOS ANGELES (CBS) — It’s going to be as hot as a firecracker in the valleys and inland areas through the Fourth of July with triple-digit heat expected to stick around.

The marine layer up against the coastline Sunday shrouded crowded beaches, bringing with it some relief with highs reaching into the mid-70s.

But warm temperatures are forecast Monday, with highs in downtown reaching the upper-80s; 100 in the Valleys and mid-70s along the coast.

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Central and Northern California are also experiencing some very warm conditions with heat watches in place from San Francisco all the way through the Central Valley.

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Forecasters say a bit of a break is expected by Thursday.

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