Recent National Weather Service and NOAA model runs position the 104-105°F bin as the market leader for Dallas’s August 22 high because persistent high pressure and mostly sunny skies are expected to sustain the current heatwave, with forecast highs clustering between 103°F and 106°F. Recent observations show Dallas already reaching 106°F earlier in the week under similar conditions of low humidity and light southwesterly flow, providing a strong analog for continued extreme heat without significant cloud cover or precipitation to moderate temperatures. Ensemble guidance shows limited spread, though minor shifts in steering winds or afternoon convection could push readings into the 106-107°F range or hold them near 102-103°F. Traders are therefore weighting the central bins most heavily ahead of the final model updates and official verification on the 22nd.