Another NoDaker here. Grew up in Bakken country, but the closest I ever got to your place was on a couple of trips from UND to Winnipeg. I forget what is was we were studing on those field trips.
Due to extreme blood thinning from southern exposure, I rarely get back except for reunions and to see how close the drilling is getting to the family holdings.
My personal ND temp records are 44 below and 112 above.