Current National Weather Service forecasts for Dallas point to clear skies and southerly winds sustaining overnight lows in the upper 70s to low 80s on August 30, aligning with the tightly grouped market-implied odds around 76–83°F. Persistent high pressure and Gulf moisture limit radiative cooling typical under clear conditions, while the urban heat island effect—stronger at night from stored daytime heat in concrete and reduced vegetation—elevates minimum temperatures above the 1991–2020 climatological average near 75°F. Minor model differences in dew points, boundary-layer mixing, and local wind patterns create the observed probability spread across adjacent bins, underscoring forecast sensitivity near resolution thresholds. Updated model runs and observations will refine these estimates before the daily minimum is recorded.