Cooling after the mid-July heat wave's peak is the main driver behind trader sentiment clustering around 78–81°F for Los Angeles' July 17 high. Weakening high pressure has allowed stronger onshore flow and a deeper marine layer to advect cooler, moister air from the Pacific, while the afternoon sea breeze further caps temperatures in the basin. Official NWS guidance and recent model runs (GFS/ECMWF) show downtown or airport readings settling in the upper 70s to low 80s rather than the mid-90s seen mid-week, with limited spread reflecting modest uncertainty in boundary-layer mixing and exact marine intrusion timing. Historical July averages near 83–85°F provide context, but the post-heatwave pattern favors the current tight distribution across the three leading bins. Updated afternoon forecasts and any late-model shifts remain the key near-term catalysts.