Official observations from Austin Bergstrom International Airport recorded a minimum temperature of 78°F on October 14, 2026, twenty degrees above the 1991–2020 normal low of 58°F. Persistent southerly flow advected warm, humid Gulf air across central Texas, limiting nocturnal radiative cooling as overnight relative humidity reached 90 percent with extensive cloud cover. This suppressed the typical 15–20°F diurnal drop, keeping the low in the upper 70s rather than the mid-60s or cooler values implied by earlier model guidance. Market-implied odds clustered tightly around 70–75°F because traders weighed historical October variability against the late-summer warmth that dominated the preceding week, while the slim probability assigned to 80°F-plus reflected the low likelihood of even warmer conditions once the cold front timing shifted.