Recent National Weather Service forecasts place Seattle's August 26 high at 77°F under partly cloudy skies as an upper ridge yields to an approaching low, shifting from Tuesday's onshore-blocking warmth (highs in the 80s) to cooler marine-influenced flow. This transition supports the market's tight clustering around 76–79°F outcomes, with traders weighing minor model differences in cloud cover timing, wind shifts from northerly to southwesterly, and any lingering smoke effects on diurnal heating. Official guidance and ensemble consensus emphasize temperatures below the prior day's peak while remaining above seasonal normals, with next model runs and afternoon updates likely to refine the exact maximum before settlement.