Yea I gotta agree with PB here,
The dews look good and along an arctic front like this the cold can come in like a wedge right "underneath" any warm layer. Imagine driving a doorjam into a door swinging shut, it's going to stop that door and that wedge will hold it. I can't argue against a strong cold front coming in like this, with increasing precip rates and favorable dewpoints, I can't see how this is mostly rain for any of these areas.
Despite a SW flow initially, it wouldn't take even the weakest of lows off the coast to be able to moderate the potential for increasing BL temperatures.