Forecast models from the National Weather Service indicate a Thursday overnight low near 59–60°F in San Francisco, driven by persistent onshore flow and a shallow marine layer that limits radiational cooling under mostly cloudy skies. This setup aligns with typical late-August conditions, where average lows hover around 56°F amid moderate west winds of 10–20 mph, though recent days have seen slightly warmer readings near 57–62°F. Trader sentiment clusters tightly around the 58–61°F bins because small differences in stratus timing or boundary-layer mixing could shift the minimum by 1–2°F, while historical data show rare drops below 54°F this time of year. Updated model runs and official observations through early Thursday will refine these probabilities.