I'm with you, OP. And I'm also a New Englander! We're also going in October, and I hope it's not too bad. Frankly, anything over 85 is too much for me. And I agree with PP that it's the humidity that kills me.
I'm also worried about our trip to Storyland (I'm SURE you know where this is!

)this summer. We normally go in June, but this year it will be in August. I hope it's not too awful!