Recent National Weather Service guidance and ensemble model consensus point to a Seattle high near 65–66°F on October 6 under persistent high pressure and light northerly flow. This setup favors mostly sunny to partly cloudy conditions with modest daytime heating, limited marine-layer influence, and overnight radiative cooling that keeps lows in the low 50s. Early-October climatology supports highs in the mid-60s, and the current stable pattern shows little deviation risk before resolution. Traders therefore cluster probability on the 64–67°F bins, with lower odds on cooler or warmer outliers reflecting minor uncertainties in cloud timing and boundary-layer mixing.