Persistent high pressure and clear skies under southerly flow are sustaining elevated overnight temperatures across North Texas, with official guidance from the National Weather Service pointing to a minimum in the upper 70s Fahrenheit for Dallas on August 30. Model consensus shows limited overnight cooling due to high dew points near 70°F and light winds that suppress radiative heat loss, keeping the lowest readings clustered near 78–82°F. Recent observations from Dallas Love Field confirm a pattern of daily lows holding in the upper 70s amid the ongoing heat wave, with only modest day-to-day variability expected before any frontal passage. The tight clustering of market-implied probabilities across the 78–83°F bins reflects genuine forecast uncertainty in the exact minimum, as small shifts in wind or cloud cover could alter the overnight low by a degree or two before resolution.