Starting to remind me a little of that dread summer 2000. Man that year was like stuck on the date of shits May 5th type weather, straight to October 1st.
I lived in Waltham at the time, utterly preoccupied with other life bs like finding a decent job and sweatin' this old g-f I couldn't get off my mind. Plus just social life was going in different directions in general. Heh. It was a like I took a sabbatical from Met nerding for a couple years back then. But, even in that state I'm more than merely tacitly aware of what's going on when it comes to weather shit. That summer was shitty most of the time. May not be an exact match or even an analog et al, but the results reminds me of this year so far, ...gets/got cool/wet at least excuse imagined, and then whenever a warm outlook happened, it always shirked by 10 F or just outright failed.
As far as this thing on Friday, it is a rarefied ordeal. It happens some times, but this is a cool anomaly nested inside a warmer/much larger synoptic manifold.