@iamsweetmystery , I grew up in North Texas and I can assure you that May is our rainiest month on average! 😅That is followed by October. June would be next, but all the rain in June usually happens in the first half of the month, and technically Summer doesn't start until after that. July is our driest month. We sometimes get a little more rain in August when a tropical system wanders nearby from the Gulf, but this is never a guarantee. 😉 But this is why you in South Texas get more rain in the summer! It just doesn't always make its way up to North Texas.
I don't think Chestnut Ridge was modeled after north Texas, at least not how the real north Texas looks, more like what people think north Texas looks like, especially from people who have never been to Texas. North Texas is more plains and prairies, which extend up into North Dakota and even Canada. . Chestnut Ridge has too many rocks (mostly sandstone, which isn't prevalent in North Texas at all) and mesa-like structures and arches that I've seen in pictures of Utah (but Utah looks more reddish/rusty colored from what I've seen. There also might be some other states that have similar features, though it doesn't quite look like New Mexico either. So, it could be a mix of some different areas.
I can see with the color of the soil and rocks how one might think of Oklahoma, but Oklahoma looks more reddish or rusty colored as opposed to the more yellowish or ochre that I see in Chestnut Ridge. (Most areas in North Texas have more brownish soil as well as more limestone which is white). And again, the parts of Oklahoma that I've seen for the most part have been flat and more like a reddish version of Texas, since it is mostly part of the plains/prairies.
Granted, any state can have an area or pocket of a different terrain, but from what I can tell, this seems more to be like Utah, perhaps Zion National park, though I have never been there myself, only just looked at the photos that my relatives took when visiting there! It just doesn't look like North Texas at all. 😉