Latest National Weather Service guidance and ensemble model runs center San Francisco’s June 14 maximum near 72 °F, reflecting a persistent marine layer and moderate onshore flow that limits inland heat advection to the coast. Typical June climatology features strong upwelling and stratus, keeping highs in the upper 60s to low 70s; recent forecasts show only modest warming aloft without a robust offshore ridge that would push readings into the mid-70s. Trader clustering around the 70–73 °F bins therefore tracks the narrow spread in short-range solutions, with small differences in marine-layer depth or afternoon clearing timing sufficient to shift the observed high across the 70–71 °F, 72–73 °F, or 74–75 °F thresholds. Updated model cycles and afternoon observations will refine these probabilities before resolution.