Roxtar said:
Go with a foam mattress in cold weather.
Air mattresses just bring the ground temp right up to you.
Um... ya... I'm going to have to go ahead and sort of disagree with you there.
Before I actually did it, I had all these guys on my motorcycle forums tell me I would freeze my ass.
Unless you don't have it inflated enough and your body is actually making contact with the ground, the air mattress is an insulator. There is no significant convection inside the mattress to conduct heat away from you, and the cooler ground temp can't rise up to you. The majority of heat lost would be radiant, the same as a foam pad. A space blaknet between you and the ground fixes that if you need it.
The reason you got cold is most likely an inadequate sleeping bag (which should be rated 20 degrees colder than your intended use), or you had contact with the ground.
I find air mattresses to be super comfy, and with a 0F bag, i can camp in 20F and have the best night's sleep of my life.
All I can say to the folks who never tried it is, blow the $9 on an air mattress on sale and see for yourself.