Persistent high pressure and southerly flow from the Gulf of Mexico maintain elevated dew points near 75°F and light winds across Houston, limiting nocturnal radiative cooling and supporting overnight lows in the upper 70s to low 80s on August 31. National Weather Service forecasts and recent model guidance show mostly clear to partly cloudy conditions with only slight rain chances, consistent with the ongoing late-summer pattern of minimal temperature drops. Historical August 31 averages near 75°F contrast with the warmer current regime, where high humidity and weak pressure gradients suppress variability. Trader consensus across closely matched bins around 76–81°F reflects uncertainty in exact minimum readings, which hinge on small differences in cloud cover, wind mixing, or localized observations at official stations. Updated NWS briefings and model runs through the weekend will refine these short-term thresholds ahead of resolution.