Updated Thursday at 12:29 p.m.
Prior to Seattle reaching that all-time record high of 108F on June 28, the hottest ever was 103F back on this date in 2009. Oh, has our heat bar been raised. While we do have some summer heat through Saturday, daytime temperatures only peak in the low-to-mid 90's across the Cascade foothills and SW Interior. Still, 90-degree heat in July is somewhat rare...occurring in July about half the years since record-keeping began in 1945. Therefore, the heat risk remains high for those who are sensitive to hot conditions or without effective cooling and hydration.
But this will not be a repeat of last month's insane heat wave. The "heat dome" is weaker and just a tad too far east to create runaway temperatures in Puget Sound.
Yet chances are Puget Sound ends July without a drop of measurable rain, a feat that has happened only four other times in Seattle history. Isolated thunderstorms could be set off in the Cascade Mountains Friday and Saturday as tiny ripples of energy flow through the upper atmosphere. But not until Sunday does the cooling onshore flow bring the potential of light sprinkles to the lowlands, just in time for August to begin.
Meteorologist Kristin Clark
The KOMO 4-Cast Team
Today's Record Temperatures