**Forecast consensus points to a low in the mid-50s°F for San Francisco on August 29, 2026, aligning with the market’s leading bins (56-57°F at 41.5%, 58-59°F at 30.0%, and 54-55°F at 27.5%).** Multiple sources, including NWS, WeatherBug, and US Harbors, project overnight lows of 55–57°F under partly to mostly cloudy skies with moderate west winds of 10–20 mph. These conditions reflect the typical late-summer marine layer and onshore flow that moderates temperatures along the immediate coast. Seasonal normals support this range: the 1991–2020 average low for August 29 is 56°F, with recent August nights in the city running 56–58°F. No significant warming or cooling anomalies are indicated in current model guidance; a weak trough has kept temperatures near or slightly below average without introducing unusual moisture or wind patterns that would shift the minimum substantially. Trader sentiment clusters tightly around the 54–59°F outcomes because short-range forecasts show high consistency, with the exact low hinging on how much radiational cooling occurs under any partial clearing overnight. Higher bins (60°F+) carry low implied odds consistent with the absence of offshore flow or ridging, while colder extremes remain unlikely given the persistent marine influence. Updated NWS guidance or late-day model runs could refine the precise minimum before the calendar day ends.