Traders see the 80–81°F bracket leading at 34.5% because National Weather Service models and ensemble guidance indicate a modest cooling trend for Los Angeles on July 25 following the recent Southern California heat wave. Onshore marine-layer flow and a strengthening sea breeze are expected to cap afternoon highs near downtown and coastal stations after peaks earlier in the week. With 78–79°F and 82–83°F brackets each holding substantial implied probability, forecast uncertainty centers on exact boundary-layer mixing and any late-day clearing that could allow an extra degree or two. Historical July climatology around 83°F provides context, but current model consensus favors the lower end of the typical range, leaving resolution sensitive to the final observed maximum at the designated station.