The National Weather Service says Seattle's high of 94 at Seattle-Tacoma International Airport set a record for July 1, besting the old mark of 89, set last year.
Meteorologist Jeff Michalski says elsewhere in Western Washington, other record highs for July 1 included Olympia at 94 degrees; Quillayute on the northwest Olympic Peninsula at 91; Hoquiam at 89 and Bellingham with 84 degrees.
In southwest Washington, Vancouver hit 98, while in Eastern Washington, the Weather Service says Ephrata and Moses Lake both reached 96 degrees. None of those cities set a record.
In Spokane, the thermometer only got to 88.
Weather in the region is expected to moderate Wednesday as a cooler maritime front pushes in from the Pacific Ocean.