Marine layer and persistent onshore flow from the Pacific are anchoring coastal Los Angeles temperatures, including at the primary official station (KLAX), near the seasonal norm despite broader regional heat. National Weather Service guidance and recent model runs indicate a daytime high in the mid-to-upper 70s under mostly sunny skies with light winds, limiting inland heat advection to the coast. This aligns with the market’s heavy weighting toward 76-77°F, while lower probabilities for 78-79°F reflect residual uncertainty in afternoon clearing and any temporary offshore wind shifts. Historical August averages at LAX hover around 75-78°F, providing baseline context for the current consensus.