North Carolina monthly average temperatures range from a high of 88.3 degrees to a low of 27.3 degrees.
Ohio monthly average temperatures range from a high of 85.8 degrees to a low of 15.5 degrees.
Kentucky monthly average temperatures range from a high of 87.6 degrees to a low of 23.1 degrees.
Indiana monthly average temperatures range from a high of 88.8 degrees to a low of 15.8 degrees.
(Source: netstate.com)
These are the first - and only - four states I looked at, because of their distinct accents and relatively central location.
[Opinion, anecdotes, and idle speculation follow.]
Teachers are as bad as the rest of us when it comes to being idiots - worse, since they get to implant their damnfool notions into young minds with an authority matched only by idiot parents’ damnfool notions. I’m sure during his or her career your teacher managed to convince many, many students of this particular one.
Mexican Spanish seems, to me, as fast-paced as any English, and it’s fairly warm down there. My ex-wife is from Portsmouth, England, and speaks rather slowly.
I’ve also not noticed a difference between the accents of those living in cooler, mountainous areas and the warmer, lower surrounding areas. So it seems likely that regional and cultural influences are far greater than climate differences.
As far as movement pacing goes, I dunno, but I wouldn’t bet there’s a significant regional variation in the absence of empirical evidence. Individual variation probably overwhelms any regional variation - the slowest, most meticulous person I’ve ever worked with came from New York City, and the fastest, most high-strung was from Boston.
(Er, unless the latter is myself - and I don’t make a good sample, having knocked around most of the US both as a kid and adult, without stopping too long in one spot. My accent is that sort-of-midwestern “newscaster”, although my friends claim that, when highly agitated, I sound sort-of-southern.)