Current NWS and private forecast consensus points to a Seattle high on August 29 in the upper 60s amid morning rain and gradual afternoon clearing, supporting the tight clustering of market odds around 66–69 °F. Persistent low-level marine stratus and widespread precipitation will reduce solar heating, while light winds limit mixing and adiabatic warming. These conditions typically cap temperatures 5–8 °F below the late-August climatological normal of ~75 °F. Model spreads remain modest, centered on when partial clearing occurs; any earlier break in clouds or lighter rainfall totals could push readings into the low 70s, while prolonged overcast would favor the mid-60s. Updated NWS guidance and high-resolution model runs tonight will refine the exact maximum before resolution.