Official forecasts from the National Weather Service and ensemble models indicate a high near 70–73°F for Seattle on August 28, 2026, driven by persistent marine-layer influence and onshore southwesterly flow that limits daytime heating. Morning cloud cover and light winds are expected to restrict mixing and solar insolation, with only gradual afternoon clearing possible under a weak pressure gradient. This setup aligns with recent climatological norms for late-August Puget Sound conditions, where sea-surface temperatures and boundary-layer moisture typically cap highs in the low-to-mid 70s. Trader consensus clusters tightly around these ranges because model spreads remain narrow, with only modest differences in the timing of any light showers or the extent of clearing that could nudge the peak a degree or two higher or lower. Updated NWS point forecasts and afternoon model runs will provide the final guidance before resolution.