**Persistent late-summer heat and limited nocturnal cooling are anchoring trader expectations for the lowest temperature in Dallas on September 1 near 80–83 °F.** Official National Weather Service forecasts and multiple private models show a daytime high of 98–102 °F under mostly clear skies with southerly flow, followed by an overnight low of roughly 80–83 °F. This reflects above-average conditions relative to the long-term September 1 minimum near 75 °F, driven by a continuing heat dome, high dew points that suppress radiative cooling, and the absence of any cold-front passage or increased cloud cover that would otherwise allow temperatures to drop further. The closely matched market probabilities around 80–83 °F capture this consensus while the elevated price on 90 °F+ outcomes and the tail on cooler bins reflect residual uncertainty in short-range model guidance and the possibility of slight timing shifts in the minimum. With resolution imminent, any updated NWS forecast or last-minute observational data on wind or cloud trends could still influence final positioning.