Persistent heat dome ridging over the southern Plains and Texas, reinforced by a strengthening El Niño pattern that enhances subsidence and limits cool-air intrusions, is keeping overnight lows elevated. Official guidance from sources such as the National Weather Service and ensemble model consensus points to a minimum near 76–78 °F on September 2 under partly cloudy skies, light southerly flow, and dew points in the low-to-mid 70s that suppress radiational cooling. This places the 76–77 °F bin at the center of trader consensus, while the near-even odds on 69 °F or below reflect residual model spread around moisture advection or brief clearing that could allow marginally greater nocturnal cooling. Conversely, bins at 84 °F or higher capture tail-risk scenarios of stronger mixing or delayed boundary-layer decoupling, though these remain inconsistent with current thermodynamic profiles. Historical early-September climatology for Austin shows typical lows near 70 °F, underscoring how the anomalous ridge has shifted probabilities upward; the next model runs and any short-term forecast adjustments from the local NWS office will likely determine whether the market tightens around the mid-70s or rebalances if a weak disturbance increases cloud cover.