A cold front passage on October 15–16 has shifted Dallas into northerly flow behind high pressure, producing clear skies and light winds that limit daytime heating. Official National Weather Service and model guidance converge on a maximum temperature of 65–67°F for October 17 under sunny conditions, with afternoon readings peaking near 63–66°F before rapid nocturnal cooling to the upper 40s. This places the outcome squarely between the market’s two leading bins (66–67°F at 50.0% implied probability and 64–65°F at 41.0%), reflecting tight scientific consensus on post-frontal stabilization rather than any lingering uncertainty in steering or cloud cover. Historical climatology for the date shows an average high near 79°F, underscoring how the recent frontal intrusion has suppressed temperatures well below seasonal norms.