Except the superior temperature data does not show September to be particularly hot. For years, NOAA lobbied for the establishment of a gold standard climate sensing network that would not require the 'adjustments' they do on other data. The gold standard data is below.
You'll note there is nothing remarkable about September's temperatures. In fact, there is no net warming in the United States at all since the USCRN network was installed.
NOAA can't have it both ways: Spending many millions of our tax dollars for this "gold standard" (their words) climate network that it ignores when the gold standard data is, shall we say, "inconvenient."