**Recent marine layer strengthening and persistent onshore flow from the Pacific have kept overnight lows in the upper 60s to low 70s across coastal Los Angeles stations, driving trader focus on the 67°F-or-below bin at 46.5% implied probability.** Official NWS and airport observations through late August show minimums frequently settling near 67–72°F under partly cloudy skies and light southwesterly winds, consistent with typical late-summer climatology moderated by cool ocean air rather than extreme heat. Forecast models indicate the Aug 28 minimum will likely fall in the 70–77°F range, creating genuine uncertainty around exact resolution thresholds and supporting secondary probabilities clustered in the low-to-mid 70s. Traders weigh these factors against historical August lows near 65°F, with new observational data from LAX and downtown stations expected to clarify the outcome before market close.