Latest National Weather Service and ensemble model guidance point to a marine-layer moderated high of 80–82°F in Los Angeles on July 21, establishing the primary driver behind the market’s concentration of implied probability on the 80–81°F bin (43.5%). Persistent onshore flow and low-level stratus have kept coastal maxima several degrees below the broader summer 2026 above-normal temperature outlook issued by NOAA’s Climate Prediction Center, while recent 48-hour runs show limited warming potential before the next diurnal cycle. Historical July climatology for downtown and LAX stations places the 80–83°F range as the most frequent outcome under similar synoptic patterns, reinforcing trader consensus reflected in the combined 98.5% probability assigned to 78–83°F. Updated short-range forecasts tomorrow morning will provide the final inputs ahead of official station observations used for resolution.