National Weather Service model runs and real-time observations from San Francisco International Airport show afternoon temperatures stabilizing in the mid-60s under a persistent marine layer and moderate onshore westerly flow, placing the daily high squarely within the 66–67°F range. This outcome aligns closely with climatological May norms near 67°F while reflecting limited high-pressure influence that has kept low-level stratus and advection from suppressing warming. With resolution approaching, the market-implied 98.5% probability on 66–67°F captures the strong consensus across guidance, though modest erosion of the stratus deck or brief wind shifts could still allow a push to 68°F or higher.