Higher pressure aloft offshore is forecast to build as it moves onshore into this weekend, bringing the first heat wave of the year. Heading into the weekend, cooler onshore breezes from the Pacific Ocean are expected to weaken, permitting temperatures to climb to their highest readings so far this year.
The warm up begins Wednesday and continues through Sunday, likely the warmest day of this event. For the interior of Western Washington, high temperatures Wednesday are expected to warm into the 70s after areas of morning clouds dissipate. The Fourth of July offers plenty of sunshine and highs ranging from the 70s to mid-80s.
The warming continues Friday with
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