Recent National Weather Service and model guidance point to a minimum temperature in the low-to-mid 50s Fahrenheit for San Francisco on October 13, driven by clear skies overnight, light variable winds, and moderating marine influence from the Pacific that prevents sharp radiational cooling typical of inland valleys. This aligns with the market's clustered probabilities around the 44–61°F ranges near 33%, while the 49% implied odds on 62°F or higher reflect trader weighting of urban heat-island effects and possible forecast revisions from lingering warmth. With no significant frontal systems or strong offshore flow expected, the primary uncertainty centers on exact dew-point recovery and any late-day marine stratus that could cap the daily low. Updated model runs and official NHC/NOAA briefings through the evening will provide the next key data points for resolution.