Recent National Weather Service and model consensus forecasts indicate a high of 63–65°F for Seattle on October 6, driven by northerly flow and partial cloud cover after warmer conditions earlier in the week. This aligns with the climatological average high of 63.7°F and observed cooling from highs near 70°F on October 4. Trader emphasis on the 55°F-or-below bin alongside 64–67°F outcomes reflects remaining uncertainty in cloud timing and boundary-layer mixing, with ensemble spreads showing potential for modest downward revisions. Updated model runs and NWS briefings in the next 48 hours represent the key near-term catalysts for shifts in implied probabilities.