Persistent warm, humid tropical air across the Northeast is suppressing nocturnal cooling ahead of August 8, keeping National Weather Service model guidance centered on overnight lows of 76–79 °F in New York City. Elevated dew points, lingering cloud cover, and scattered thunderstorm activity limit radiational heat loss, pushing minimum temperatures 8–12 °F above early-August climatological norms near 67 °F. Recent NWS forecasts and private model runs show only modest differences in timing of any clearing or wind shift that could allow slightly deeper cooling into the mid-70s. Traders therefore assign the highest implied probabilities to the 78–79 °F and 76–77 °F bins while compressing cooler outcomes, reflecting the narrow but genuine uncertainty in how much the airmass moderates overnight.