Technically a record for MHT (but that database is in shambles), but nothing for CON or PWM and tied at AUG. Heat definitely dropping off to "near-record" farther northeast.
I guess I'm confused. Even with the heat island effect BOS hasn't done back to back 100 degree days. So it would seem pretty significant to me event if land use has changed in that time.
It's going to be tight, but if BOS can go back to back 100s that's not been done since the 40s. This definitely a step up from your low to mid 90s heat wave.
It's like a weak or decaying upper low and I think it's EuroGW with the convective QPF. But there are hints from both the Euro and GFS that there is a warm advection driven area of lift early next week. That could at least lead to a more cohesive area of rain.