I’m pretty sure I know what that coop is and can tell you 100% that the temps it records are high. Not occasionally high but every single reading. If it’s the one I’m thinking it is, it is located very close to the airport and it’s temps should not differ by the amount that it does. Even at that station, if that’s the one, his temps are almost 2 degrees below normal for the month.
Of course I could be wrong and you are using a different site but I don’t know that many that are out here.
I do agree that this month has been pretty much an average month though. A couple of degrees either way in my book is pretty average.