Recent National Weather Service and model guidance place Seattle's overnight low for September 1 near 55–59°F under partly to mostly cloudy skies, with a modest chance of light rain developing after midnight as a warm front approaches from the Pacific. This transitional early-fall pattern, featuring lighter winds and increasing marine influence, limits strong radiative cooling compared to clear conditions, keeping temperatures above the historical average low of about 55°F. Trader consensus across the closely matched 48–61°F bins reflects model spread in cloud timing and marine layer depth, while lower probabilities on extremes align with climatology and the absence of strong high-pressure or cold-air advection. Updated NWS briefings and next model runs will clarify any shifts before resolution.