Snoqualmie Weather: The week ahead – areas of light rain for back to school Monday, but sunny weather makes a comeback with potential heatwave mid-September

[Article by Ryan Porter of Snoqualmie Weather] 

Areas of light rain or drizzle overnight possible tonight into Monday morning.  While the brunt looks north, anything that makes it this far south should dry out quickly by Monday afternoon as high pressure aloft begins to rebuild.

We should be quite warm with plenty of sun much of the week, highs probably in the 80 °s by Thursday-Friday.

Labor Day weekend looks marvelous and toasty with highs well into the 80°s.  Yeah, here comes September but the calendar says it’s still summer, so I won’t go rooting for any windstorms just yet:)

Photo courtesy of

And summer looks to have at least a few more laughs.  That is, we may not be done with 90°s.  The GFS model is hinting that a thermal trough will develop over the West, kicking up offshore flow and sending temperatures above 90° in many spots West of the Cascades by about Labor Day. 

Best guesses at this point is the heat will probably be around more than a day or two.  At least we’ll be down to about 13 hours of daylight.

Euro model ensembles also show this in the extra extended forecast, but there’s still a high degree of uncertainty out that far.

In any case, despite the school calendar, it would appear summer will keep on rolling…

Almanac for the week ahead (Snoqualmie Valley):

  • Average High ~73°
  • Average Low ~49°

[Originally published at Snoqualmie Weather blog During active weather follow more frequent updates @snoqualmiewx]

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