Latest National Weather Service guidance and model ensembles from GFS and ECMWF point to San Francisco highs of 65-70°F on April 16, mirroring the tight clustering of trader probabilities across 66-75°F bins, with 66-67°F leading at 31.5%. Recent scattered showers and isolated thunderstorms through April 13-14 have maintained cool marine-influenced air masses, suppressing temps below seasonal averages near 64°F, but a transitioning upper-level ridge and weakening low-pressure trough signal potential diurnal clearing of persistent coastal stratus. Key differentiators include burn-off timing of the marine layer—earlier clearing could push toward 70-75°F via enhanced solar heating, while stubborn fog favors 66°F or below—amid light onshore winds of 10-15 mph. New 12z model runs expected midday April 15 may refine this uncertainty.