Persistent high pressure and clear skies across North Texas are sustaining an intense heat wave, with National Weather Service forecasts showing overnight lows for Dallas on August 22 clustered near 82–86°F amid southerly flow, light winds, and dew points that limit radiative cooling. Recent model runs indicate minimal overnight cloud cover or precipitation to alter the temperature trajectory, keeping the market focused on bins between 82–85°F where subtle differences in boundary-layer mixing and urban heat retention create the tightest probabilities. Forecasters note the ongoing extreme heat warning and consistent guidance from short-range ensembles as the main anchors for trader sentiment, with any last-minute shift in wind direction or moisture advection the primary variables that could tip resolution between the leading outcomes.