Persistent marine layer depth and moderate onshore flow from the cooler Pacific Ocean are capping afternoon heating at coastal Los Angeles stations, keeping the August 20 high temperature centered in the 78–81°F range according to National Weather Service guidance and ensemble model consensus. This pattern aligns with typical late-summer climatology, where sea breezes and low stratus limit inland warming despite broader seasonal warmth. Recent observations confirm stable marine influence with minimal model spread, reinforcing trader consensus around the 80–81°F bin as the most probable outcome while allowing limited upside or downside risk tied to any late-day onshore surge or clearing.