Persistent high-pressure ridging across Central Texas drove unseasonably warm conditions on September 13, 2026, with official observations recording a daily high of 101°F at Austin-Bergstrom International Airport amid dew points in the 70s that boosted heat indices above 105°F. This aligned with a prolonged heat wave featuring over 40 triple-digit days year-to-date, consistent with model guidance from NOAA and local analyses showing minimal cloud cover and southerly flow limiting cooling. Trader consensus at near-100% implied probability for the 100-101°F bin reflects verified station data rather than forecasts. Shifts could occur only from post-event measurement revisions or station-specific discrepancies, though historical records and multiple reporting sources corroborate the outcome.