Ororo has command over all aspects of the weather, and that includes raising and lowering temperature/immunity to extreme temps or else she wouldn't be able to control what she does! That said, we don't see it in Evo, but it is used in comics (and even then, sparingly because it's hard to make a good visual out of that kind of power) so I think she'll be useful in that sector \o\!

Also also, re: repowering the generators on day 6. Can Ororo do that with her lightning or will they need to be fixed up by someone more techsavvy? (She's been shown to power Cerebro with her lightning in Evo canon so it can be a thing?)