Recent forecasts from the National Weather Service and ensemble models indicate a Monday night low near 56–58°F at San Francisco stations, aligning with the late-August climatological average and recent overnight readings in the upper 50s. Trader sentiment remains split between the 68°F-or-higher and 49°F-or-below outcomes because of uncertainty in marine-layer depth, onshore flow strength, and cloud cover, which control radiative cooling and whether the airport site experiences typical fog intrusion or clearer skies that could allow modest warming or stronger cooling. Wind speeds of 5–15 mph and the absence of significant synoptic changes keep the distribution tightly clustered around historical norms, with model consensus narrowing only modestly as the event window approaches.