Recent National Weather Service and model guidance indicate Houston’s overnight low on September 8 will most likely settle in the upper 70s, with forecast minima clustered near 78–82 °F under a warm, moist Gulf air mass. Persistent southerly flow, dew points in the mid-70s, and light winds limit nocturnal radiative cooling, keeping temperatures elevated relative to the 1991–2020 climatological average low of 74 °F. High humidity and partial cloud cover further suppress temperature drops, while the absence of a frontal passage or drier northerly advection reduces the chance of readings dipping into the mid-70s or lower. Traders are therefore weighting the 78–79 °F and 80–81 °F bins most heavily, reflecting the narrow but still uncertain range between official forecast products and real-time mesonet observations expected through the night.