"Cold" Ability Damage

It seems that I can take the CON damage from resting in the cold, even when I'm naturally immune to ability damage/level drain via item, or other form of immunity (Priestess of Zolaras etc.)

Is there a reason for this, or is the CON damage supposed to bypass the immunity?

The Con damage isn't magical in nature...it's, um, natural. It's basically fatigue and stress from sleeping out in the cold or rain, where you can't get enough helpful sleep.

Want to avoid this situation? Sleep indoors (it's the cold and/or wet weather that'd causing it), sleep only in non-snow/rain situations, or use a portable encampment (your handy ox or tenser's floating disc can carry one for you if you don't have the strength to haul one around with you).

I wondered about this two... woldbloods have a natural resistance to cold, so shouldn't they not get the chills quite as easily as other races/subraces?

For the next server reset, wolfbloods will have an easier time of making the save (DC 6 instead of DC 12). They have fur, but even a wolf needs to find shelter when sleeping in the rain or snow.