Pardon the interruption, but I wanted to take a moment to let everyone know about the Pathfinder Superlatives folder.
If your character does something amazing (max damage on crit, heals the entire part for max hit points, jumps a 15' foot ditch, bluffs a venture-captain into giving you his clothes), make a post about it in the Superlatives folder and let us know.
We now continue with your regularly scheduled program.
Apologies if you've had to read this more than once!
In the Miscellaneous thread, you mention that "a character with the Survival skill may receive a bonus... (see skill description)" The description for Survival (http://www.d20pfsrd.com/skills/survival) doesn't make any specific mention of heat effects - does this count as "get along in the wild", "bonus vs. severe weather", or something else? And by "character with the skill", do you mean only trained characters get the bonus?
Now that I've had a chance to think straight, I see what I did. I will change Orin's post.
But...just to make sure, I got this right. We're rolling the survival check as normal to see if we get a +2 to the Fort save for the heat. Right? And the Fort save is DC15 and has a -4 penalty for metal armor.
(I'm starting to sound like I know what I'm doing. I still might be wrong, but it sounds good!)