**Persistent tropical moisture and cloud cover from the remnants of Tropical Depression Edouard are the main drivers keeping overnight lows elevated near 78–79°F for Houston on September 4, with National Weather Service forecasts calling for upper 70s under partly to mostly cloudy skies and 50–60% storm chances.** Southerly to southeasterly flow advects humid air (dew points in the mid-70s), limiting radiational cooling despite light winds, while scattered showers and thunderstorms add downward longwave radiation that prevents temperatures from falling further. This setup supports the 78–79°F bin as the most likely minimum, consistent with climatological averages around 75°F but nudged higher by the ongoing moisture plume. The competing 88°F+ outcome reflects trader uncertainty over whether persistent overcast conditions or heavier rain could suppress cooling enough to keep the daily minimum anomalously warm, a scenario that would require stronger low-level warm advection or stalled convection. Model consensus favors gradual clearing overnight, favoring the lower range, though any delay in storm dissipation could shift the outcome toward the higher bins.