Warm, humid conditions and mostly cloudy skies are anchoring trader expectations for an overnight low in the upper 70s in New York City on August 7. A lingering warm air mass with elevated dew points is suppressing radiative cooling, while light southwest flow and the urban heat island effect—heat retained by pavement and buildings—further limit temperature drops. National Weather Service guidance shows forecast lows clustered between 76–78 °F, with minor model differences in cloud cover timing and any scattered shower activity determining whether the minimum settles closer to 76–77 °F or 78–79 °F. These narrow bins reflect the narrow scientific uncertainty range typical for a summer night lacking strong cold-air advection or clear-sky radiational cooling.