Forecast models from the National Weather Service and other sources project a minimum temperature in the mid-to-upper 60s°F for Los Angeles on September 30, driven primarily by moderate onshore flow and a shallow marine layer that limits overnight radiative cooling. This creates tight competition among bins clustered around 64–69°F while sustaining meaningful probability on the 59°F-or-below tail if stronger onshore winds or deeper stratus develop, and on the 78°F-or-higher tail if offshore flow strengthens and suppresses the marine layer. Key differentiating variables include the depth and timing of the marine layer, wind direction shifts, and any late-day cloud cover that alters heat retention, all of which remain subject to revision in the final 48-hour model runs.