Damp Mid-month?

 

Warm summer days will return.  When?  Mug refill time to find out.

 

A cool air mass moved down the BC coast to usher in notably cooler temps in the PNW.  This week will remain cool early, then warm up a bit on Wed & Thu.  But the warmth will not last long.  Looks like the model solutions that forecast a cool, damp holiday weekend (for BC & NW WA) may be the most accurate. 

 

Right now, expect clouds to increase from the north early on Fri Sep 3, setting up a partly cloudy day on Sat of the holiday weekend.   Portions of OR & east side should remain sunny.  Isolated showers possible for the Puget Sound (maybe as far south as Longview/Kelso) both sometime Sat and even more likely on Sunday Sep 5.  While a bit breezy, Labor Day itself should turn clear and DRY.  Portions of western OR, and east, will likely warm into the lower 80s again.  

 

Summer days return.  Tue & Wed after Labor Day are trending WARM and DRY.  Temps could tease the lower 90s in portions of western OR.  Onshore flow may increase by that weekend, holding down temps.  The upper air flow may turn SW, which will pop up humidity and slowly build in the chance for thunderstorms and moisture across OR.  This is way out there, but model solutions are beginning to find this solution.  Temperatures should remain mild-to-warm.

 

Really?  There are indications that mid-September may turn damp.  Not strong-pacific-storm-damp, but enough of a pattern change to bring much needed precipitation across the region.  Firefighters long for this.  We all long for this.