**Consensus forecasts from the National Weather Service and multiple models point to overnight lows in the mid-60s for Los Angeles on September 30, positioning the 66-67°F bin as the clear market leader at 49% implied probability.** Clear skies and light winds are expected to permit moderate radiational cooling after daytime highs in the low-to-mid 80s, consistent with typical late-September marine-layer influence along the coast. Recent model runs show little spread, with most guidance clustering between 64-68°F and no significant frontal systems or heat anomalies altering the pattern. This stability explains why adjacent bins like 68-69°F (24%) and 64-65°F (21.5%) trail while extremes remain discounted. Traders are weighting the official NWS outlook heavily ahead of the final observation window.