The dominant market positioning on an 82-83°F minimum in Dallas on September 17 stems from official observations at Dallas/Fort Worth International Airport recording a low of 80-83°F under clear skies and light southerly flow. Persistent high pressure and above-normal temperatures, with daily averages running 10-12°F above the 1991-2020 climatological baseline of roughly 70°F, produced minimal overnight cooling. National Weather Service summaries confirm no frontal passages or significant moisture to alter the thermal profile. While model consensus and real-time station data strongly support resolution in this narrow range, minor discrepancies in exact station reporting or rounding conventions represent the primary remaining uncertainty for traders.