Official forecasts from the National Weather Service and ensemble models indicate a high in the low-to-mid 80s°F for Seattle on August 25, driven by an upper-level ridge building over the Pacific Northwest after an eastward-moving trough. This pattern promotes subsidence warming, reduced onshore marine flow under light southwest winds, and clear skies that maximize daytime solar heating. Consensus places the peak near 84–86°F at Sea-Tac, with limited smoke from regional wildfires unlikely to suppress temperatures substantially. Trader emphasis on the 82–83°F and 84–85°F bins reflects tight model spread around these values, where minor differences in boundary-layer mixing, exact wind timing, or urban heat effects could shift the observed maximum by 1–2°F. No major updates have altered this ridge-driven setup in the past 48 hours.