Recent National Weather Service and private model runs show Dallas under persistent high pressure with southerly flow and mostly clear skies on September 14, favoring strong daytime heating and highs centered near 99–100 °F. Forecast guidance clusters tightly around this range, with minor differences arising from small variations in afternoon wind speeds and boundary-layer mixing. The 98–99 °F and 100–101 °F bins dominate trader positioning because ensemble spreads and historical analogs for mid-September warm spells indicate roughly equal likelihood of finishing just below or above 100 °F. No significant frontal passage or increased cloud cover is expected before resolution, keeping uncertainty focused on precise peak temperature rather than broader regime shifts.