Persistent high pressure and southerly flow across the Houston region are sustaining elevated overnight lows near 80°F, consistent with National Weather Service forecasts for August 25 showing a minimum around 80–82°F amid heat indices above 105°F. Strong humidity and dew points in the low-to-mid 70s limit nocturnal radiative cooling, while light winds reduce mixing that could otherwise drop temperatures further. Trader sentiment clusters tightly around the 76–83°F range because model guidance shows only minor variations in timing and urban heat-island effects, with historical August lows averaging 76–77°F but recent days running several degrees above normal. Upcoming evening observations from Houston Hobby and Intercontinental airports will determine the precise minimum and resolve the closely matched outcomes.