Current National Weather Service forecasts and ensemble model guidance for Dallas on August 8 point to a high near 99–100°F under sunny skies and southerly flow, supporting the market’s tight spread between the 98–99°F and 100–101°F bins. Persistent heat across North Texas, with recent heat-index values near 104–110°F, reflects typical late-summer conditions of high pressure, light winds, and limited moisture that favor daytime maxima close to the long-term August average of 96–99°F. Minor model differences in boundary-layer mixing and afternoon dew points create the observed uncertainty, while climatological precedent shows highs in this range occur on roughly half of August days. Updated NWS briefings and 12z model runs tomorrow morning will provide the final observational constraints before market resolution.