Originally Posted by Cuffs
Call me chicken, but I had to do it. I have to be warm to sleep! I had my Montbell 15*, Ridgerest and KAQ. Yea, I probably would have been ok, but I just didnt want to wake up middle of the night begging to be let into a tent!
Yep, my guess is I would have been OK below 20 with that set up, probably well below if wind was reasonably controlled. Of course, as I say that, I am used to some fairly good additional wind block with the SS undercover. But, you need to find these things out for yourself first, and that's what backyard and car camping are for, with easy safe bailout options available.
But I bet when you realized how bad your back felt, you wished you had taken the gamble!