Current forecasts from NOAA and European models indicate a cooler-than-average day for Seattle on September 29, with a frontal system driving southerly flow, widespread cloud cover, and scattered showers that cap daytime heating. Ensemble guidance clusters daily highs near 59–63°F, below the 1991–2020 average of 66°F, as marine air and precipitation suppress surface temperatures. Trader positioning reflects this narrow range, with the 60–65°F bins holding the highest implied probabilities amid minor model spread on exact timing and intensity of showers. Updated NWS and GFS runs over the next 48 hours will likely refine the peak value before resolution.