Recent forecasts from the National Weather Service and private models indicate Seattle’s overnight low on August 24 will likely settle in the mid-to-upper 50s under clear skies and light northerly flow, consistent with climatological averages near 56°F. Radiative cooling under high pressure and minimal cloud cover supports the market’s tight clustering around 56–59°F bins, while slight model spread in boundary-layer moisture and wind speeds explains the secondary interest in 54–55°F. With resolution hinging on the official Seattle-Tacoma Airport minimum, traders weigh the latest NWS guidance and ensemble consensus against the historical rarity of sub-54°F readings in late August.