Current National Weather Service guidance and ensemble models point to a Dallas high near 104°F on August 17 under mostly sunny skies and light southerly flow, anchoring the tightest market probabilities on the 102–105°F bins. Subtle differences among guidance arise from afternoon boundary-layer mixing, minor timing of any thin high clouds, and localized urban heat-island effects that can add or subtract 1–2°F from the official Dallas-Fort Worth observation. With the forecast still one model cycle away from resolution, traders are weighting the consensus output while monitoring the 00Z and 12Z runs for any westward shift in moisture or strengthening of the capping inversion that could cap the peak below 103°F or push it toward 106°F. Historical August maxima in the mid-100s provide climatological context but limited additional signal this close to the event.