Recent National Weather Service and local forecasts for San Francisco on September 2 point to a daytime high near 65–68°F with overnight lows around 56–58°F under partly cloudy skies and moderate southwest winds, consistent with the long-term average minimum of 56°F. Trader sentiment remains balanced across bins because ensemble models show modest spread in the precise overnight minimum, driven by uncertainty in marine layer depth, radiative cooling rates under variable cloud cover, and subtle shifts in onshore flow. Typical late-summer Pacific advection continues to moderate temperatures, while the absence of strong high-pressure ridging or offshore winds limits both extreme cooling and warming potential. Updated model runs and official NWS briefings in the next 48 hours will likely tighten the distribution around the observed low.