Goodbye August

Wrapping up another month.  The weather this week will be much cooler & damp at times, although not a washout.  Some locations may miss the showers all together.  Get your refill ready.  Here goes —

Cooler today, with an onshore push of marine air.  The arrival of a cold front tomorrow - as that stationary Low west of OR & WA finally shifts inland - will usher in more clouds and showers, primarily north of Salem.  Eastern basins may also pick up some moisture, as will ID.  A stronger front will move through the PNW on Thu, will showers likely all the way south to the CA border.  Thunderstorm development is also possible just about anywhere, with the highest chance for such storm cells occurring on Fri (because of a SW flow aloft and cooler air near the surface).  

Labor Day weekend.  Models have really struggled to agree on a wx pattern over the final summer holiday weekend.  So have we.  Some solutions call for a damp, muggy thunderstorm type pattern across much of the PNW; other runs indicate dry & mild conditions.  We are leaning toward the drier forecast, with an outside chance for a shower, primarily north of Chehalis on Sunday.  

Post Labor Day - the wx looks decent during the short back-to-school / work week.  It could be mostly cloudy over the Puget Sound, but no organized rain/shower pattern is foreseen at this time.  Warm across much of OR and the eastern basins, with temps popping back up into ’summer’ warm by Thu & Fri, Sept 7,8.

Nice warm-to-hot temperatures are charting for the weekend of Sept 9,10.  Could see 90+ in much of western OR; 80s to the north, even up into BC.