Seattle Breaks Heat Record With More Heat to Come

By Brian Lada, Meteorologist
September 11, 2013; 11:17 AM ET
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While temperatures remained on the warm side in Seattle on Tuesday, even hotter weather is on the way.

The heat turned up on Wednesday with high temperatures climbing to 93 degrees, nearly 20 degrees above the city's average high for mid-September and setting a new record high for the city.

By Wednesday evening, temperatures fell into the upper 80s, just in time for the first pitch of the Seattle Mariners game at home against the Houston Astros.

Record-challenging heat continued through Thursday, although temperatures were not quite as hot.

A northward bulge in the jet stream is responsible for these unseasonably hot temperatures, allowing warmer air to settle in over the region and limiting the cooling factors that the Pacific Ocean plays on areas near the coast.

Detailed Forecast for Seattle
Northwest Interactive Radar
Forecast Temperature Map

The last time Seattle cracked the 90-degree mark, before Wednesday, was back on June 30, 2013.

As Seattle reached 93 degrees on Wednesday, the temperature was six degrees higher than the city's record high of 87 set in 2009.

Temperatures will ease a bit by Friday with highs retreating into the lower 80s.

Although this will feel more comfortable, these temperatures will still equate to 10 degrees above normal for Seattle.

Sunshine will continue through Saturday with high temperatures in the mid 80s.

Cooler air will be ushered in on Sunday, bringing temperatures down to the upper 70s during the afternoon hours. A thunderstorm on Sunday afternoon is also possible.


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