**Persistent southerly flow and elevated dew points are keeping overnight lows well above seasonal norms for Austin on September 11.** Official National Weather Service and model guidance from NOAA indicate partly cloudy skies with south winds of 5–10 mph, supporting a forecast low in the mid to upper 70s (around 77–79°F). This aligns with the broader late-summer heat pattern across central Texas, where recent days have featured highs near 99–100°F and minimal nocturnal cooling. Trader positioning reflects notable uncertainty around these values. The elevated 45.5% implied probability on 67°F or below likely incorporates historical September variability and the possibility of localized cooling or model shifts, despite current runs showing little support for such a drop. Conversely, the 33% on 86°F or higher captures tail-risk scenarios of stronger warm-air advection or measurement differences at urban stations. Mid-range buckets around 74–79°F carry substantial combined probability, consistent with the narrow forecast envelope from authoritative sources. Updated model runs and any last-minute steering pattern changes remain the key near-term catalysts.