Current National Weather Service and private model consensus points to overnight lows in the mid-70s for Dallas on September 27, driven by persistent southerly flow advecting warm, moist Gulf air with dew points near 65–68°F and minimal nocturnal cooling under partly cloudy skies. This setup favors minimum temperatures around 74–78°F, aligning with the market's leading 76–77°F outcome at 45% implied probability. The near-even odds with the 65°F-or-below bucket reflect trader awareness of typical model spread in late-summer patterns, where a faster cold-front arrival or heavier showers could enhance radiational cooling, though no such signal appears in the latest runs. Historical September 27 lows average 66°F, but the current anomalously warm regime—highs near 95°F—keeps cooler thresholds less likely absent a sharp pattern shift before resolution.