Down to 40F here now. Probably end up around 36F for the low. Previous low has been 46F on a couple of occasions.
I've noticed for quite a while now that this new GFS has a warm bias, overstating highs and lows much of the time and not just by 1 or 2 degrees..
For example, tonight's 18z GFS shows a 06z temp here of 43F. By then we will be at 38-39F. And the 12z GFS showed a 18z temp here of 60F. The high for the day here was 56F.
Perhaps the close proximity to Boston and the ocean is causing this bias, I just don't know. But I'm sure radiational cooling plays havoc with the temp modeling.