Recent National Weather Service forecasts and ensemble model consensus indicate a high of 57–59°F in Seattle on October 10, driven by a northwest cold front that advected cooler maritime air behind Friday’s rain. This setup features partly sunny skies after morning clouds, light northerly winds, and minimal instability limiting any afternoon warming. The implied probabilities align closely with these guidance runs, which place the outcome near the lower end of October climatology (average high ~62°F). Updated NWS point forecasts and 12Z model cycles tomorrow morning represent the key remaining data points that could refine the exact maximum before resolution.