Current National Weather Service and private model consensus points to a highest temperature of 60-61°F in Seattle on October 13 under partly sunny skies and light southerly winds, aligning with the market's leading 38.5% implied probability for that bin. This outlook sits near the 1991-2020 climatological average high of 60.7°F for the date, with recent model runs showing minimal day-to-day shifts and low precipitation chances. Forecasters note typical autumn variability from Pacific high-pressure influences, though small adjustments in cloud cover or wind could nudge readings into the adjacent 58-59°F or 62-63°F ranges that hold 14.5% and 23.5% odds. Updated NWS guidance expected October 12 will provide the final refinement ahead of official measurement at Seattle-Tacoma Airport.