Linguists say “no, not really”.
I’m not really surprised. I’m from the eastern midwest (WTF? But what else do you call Buffalo? It’s not like the northeast.) It’s fairly dialect free there too, and all the way down through Indiana, and speech patterns in Utah sound fairly normal to me.
Interestingly, a lot of people in Utah are actually concerned about their dialect, and that it makes natives sound dumb.
N.B. In Utah, some people call the cultural divide Mo and No-Mo. I’m a No-Mo. But, when our kids were very young, we heard from Mo’s that Utah dialect was to be discouraged. They had a name for it: sounding like a “Utard”.
Anyway, we do have some localisms here, but it turns out most of them aren’t peculiar to Utah.
So the next time someone says “moun’n”, don’t let it bug you.
You can hear all about this on a podcast put out by RadioWest “Speaking American, Speaking Utahn”.