Monday’s high temperature of 89 degrees was the hottest ever recorded for an April day at Sea-Tac Airport, breaking a record that stood for nearly 40 years.
The previous record-holder was an 85-degree high temperature April 30, 1976, said National Weather Service Meteorologist Josh Smith.
The heat notched all-time April high marks at the other two National Weather Service climate-monitoring sites in inland Western Washington. The Olympia site reached 88 degrees and the Bellingham site got up to 83.
The Weather Service’s two coastal sites, in Hoquiam and Quillayute, didn’t get as history-making hot. Both got up to 80 degrees. The all-time April record at each site is 84.
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The record-high temperatures likely will notch another historic mark Tuesday (April 19), with a high expected in the mid-80s. That would be the third straight day with highs in the 80s at Sea-Tac Airport, which has never before been recorded in April, Smith said.
Daily high temperatures are expected to drop into the 50s by the weekend, with rain possible starting Wednesday.