Did a quick overnight here in the northeast near the Hudson, and was cold! Not dangerously cold, just annoyingly cold and I'm not a cold sleeper. Ok, here's the rundown:
Breezy, 48^ inside the tent (observed), approx. 38^ outside the tent (extrapolated from local data, and accounting for elevation).
Waypoint 1. All vents opened, perimeter vents mostly blocked to stop the breeze.
Marmot Hydrogen (30^), Big Agnes insulated Air Core.
(Skin out) Patagonia Wool 2 top, Pat. R 0.5 top, Montbell UL Down Inner Jacket, lightweight fleece hat. Nothing on legs, wool socks on feet (feet never felt cold).
I started out with the Wool 2 and R 0.5 top, then added the hat, then the Montbell jacket, and then was able to sleep. I swapped my dinner (chili mac) with lunch (2 granola snack bars), but wasn't hungry or thirsty when I went to bed. I'm just baffled that I felt cold at all.