Hi Emileah, welcome to Permies!
I live in Southern Illinois, a bit west of where you would be thinking about living and I can give you some basic commentary about the region as a whole. I am not certain what exactly you are defining as Southern Indiana, but I will go ahead and describe neighboring Southern Illinois for you.
The region, commonly known as the Heartland, is quite a bit different from Utah. For starters, the weather, climate and seasons will be different. Expect much, much higher humidity during all times of the year. From what I have known from desert dwellers, high humidity in arid regions is something like 30%. I can’t remember the last time it was that low. This might not be that much of a big deal in the spring, fall and winter, but summer heat with temperatures in the mid 90’s and humidity in the 70% or higher is oppressively hot. Granted, Utah regularly experiences temperatures higher than the upper 90’s, but the humidity is its own animal and it takes some getting used to. Also, the heat does not wane much in the evening like it does in more stir regions—the humidity really keeps the heat in. But we do generally get plenty of rain and the soil is typically plenty fertile. Cole is correct in that spring and fall can bring tornadoes.
Regarding the land, I regard Southern Illinois and Indiana to have rolling hills, though the further north you go the flatter the land will be. In fact, if you make it to central Illinois or Indiana you will find the flattest land God ever put anywhere on earth! That is all thanks to the last round of glaciers. But the dark, rich soils beneath are among the very best anywhere in the world.
Culturally, both Southern Illinois and Indiana fade into the South and Southern dialects and customs begin to appear—expect to see biscuits and gravy for breakfast! Unfortunately, there is a fair amount of rural poverty in both areas. This is part of the reason you see prices so low. Don’t let this dissuade you though, one person’s poverty is not yours. And I have generally found my neighbor’s—both next door and regional—to be extremely friendly and welcoming.
Personally I love the area and I went to great length to live here. I did have to make a few adjustments as both my wife and I are transplanted Northerners and living in the border South is a bit of a change. We did have to get used to the heat (we are still getting used to it) and I miss my snowy winters—we get about one good snow per winter, meaning 6 inches or more. I am a teacher and I sometimes get embarrassed when we get a snow day for the tiniest amounts of snow but the locals simply can’t drive on it. But again, these are little things and I personally love the rural character of the region and it would be hard to pry me out of it.
I hope this at least helps. I realize that this is only a general description and I really can’t comment about Indiana specifically but I would think that it would be at least similar to my
experience in Southern Illinois. I don’t suppose you could narrow down the part of southern Indiana you are looking at can you? That might get a better response.
Again, I hope this helps,
Eric