**Current short-range forecasts from sources like WeatherBug and the Met Office indicate a low of 57°F (upper 50s) for San Francisco on August 31 under mostly cloudy skies with southwest winds of 10–20 mph.** This aligns closely with the historical average low of 56.1°F and recent nights in the mid-50s. Marine-layer stratus and typical late-summer onshore flow are expected to limit radiational cooling, keeping overnight temperatures from dropping further while preventing significant warming. Model consensus shows little change through the period, with minimal precipitation risk and stable steering patterns. The market-implied probabilities—led by 56–57°F at 44.5%—reflect traders weighting the latest model runs and climatological norms, with secondary support for 58–59°F. Lower outcomes (below 54°F) carry reduced odds given the absence of anomalous cold-air advection, while higher readings would require an unexpected breakdown in the marine influence. Updated NWS or NOAA guidance over the next 24–48 hours remains the key variable that could shift positioning ahead of resolution.