A cold front arriving overnight on October 15-16 is the main driver behind trader positioning, shifting Austin from southerly flow and highs near 90°F to northerly winds of 20-25 mph with gusts to 40 mph. This advection of cooler air, combined with increased mixing and partial cloud cover, supports National Weather Service guidance for a Friday high near 70-73°F, with some model runs and private forecasts extending into the mid-70s depending on exact frontal timing and daytime heating. The tight clustering around 74-77°F reflects uncertainty in boundary-layer details and observational site specifics, while lower-probability warmer bins account for potential under-forecasting if the front slows. Official resolution will rely on the highest verified temperature from NWS Austin-area stations.