Current National Weather Service guidance and ensemble model runs indicate a moderating marine layer and persistent onshore flow will cap highs near the official Los Angeles measurement sites at 80–83 °F on August 2, despite an active regional heat advisory. Coastal locations such as LAX typically record 3–8 °F cooler than inland valleys because of sea-breeze advection and low-level stratus, while slight differences in morning cloud clearance or wind strength can shift the daily maximum by 1–2 °F. Traders therefore assign the highest implied probabilities to the 80–81 °F and 82–83 °F bins, reflecting tight but unresolved spread among deterministic and ensemble forecasts issued in the final 24–48 hours before resolution.