**Persistent high pressure and clear skies are sustaining a strong heat wave over North Texas, driving trader consensus toward a highest temperature of 104–105°F or 106–107°F for Dallas on August 20.** Recent observations show Dallas–Fort Worth reached 106°F on August 17—the hottest reading of 2026 so far—with an extreme heat warning in effect through at least August 19 and NWS forecasts calling for highs near 105°F under mostly sunny conditions. Low dew points and southerly flow have minimized cloud cover and allowed efficient daytime solar heating, pushing readings 8–11°F above the long-term August average high of roughly 96°F. Model guidance indicates the ridge will hold through the 20th with only minor day-to-day variability, keeping the most probable outcomes clustered in the mid- to upper-100s while assigning low probability to either a sharp cooldown or an extreme spike above 108°F. Updated NWS and private forecast runs expected later on the 19th remain the key near-term catalysts that could shift implied probabilities before resolution.