Early on, the cold seemed excessive with my first character, rendering him completely unable to sleep when it was 53 or so out, whether he was indoors or outdoors. This, combined with the fact that the massive hordes of zombies early on are far harder to deal with, meant that the character eventually died of exposure since the few houses that weren’t swarming with zombies had insufficient warm clothing.
My second character was doing fine, as I found a small town and was able to snap up enough clothing to stay warm and avoid frostbite at 50F, until they got an infected bite. I’ve cleaned the wound with six or more uses of first-aid kits, but I’ve gotten to the stage where the character is vomiting every five minutes (You feel feverish and nauseous, your wound has begun to turn green) and unless I’m lucky enough to find some antibiotics in the next ingame hour, the character will be killed by having no speed from massive thirst and hunger. This seems to be excessive, especially since I’m cleaning the wound, and not just leaving it to fester.
As a side-note, you may want to have wound cleaning give some first-aid XP.
That aside, I like the new craftables and the general layout of the latest version, but you may want to make it more obvious how exactly the temperature system works, I.E. you need to cover all of your body with warm clothing, not just some of it, and tone down the frostbite effects to at least 40F and below.