Trader consensus centers on a mid-70s high for Seattle on August 16, with National Weather Service guidance and ensemble models indicating persistent onshore marine air and variable cloud cover as the main moderating influences. These factors limit solar heating and vertical mixing, keeping maximum temperatures near the seasonal climatological average of roughly 77°F despite broader Pacific Northwest warmth. Clearer skies or a shift to offshore flow could allow readings to reach the upper 70s by enhancing daytime warming, while thicker marine stratus or stronger westerly winds would favor the lower end of the range. Model spread remains narrow, underscoring typical late-summer variability driven by local topography and sea-breeze effects, with final NWS observations expected to resolve the outcome by evening.