Official forecasts from the National Weather Service and other models point to sunny skies and highs in the low-to-mid 60s for Seattle on October 12 under a building upper-level ridge and dry northeasterly flow, driving the tight clustering of market-implied odds between 60–61°F and 62–63°F. Recent cool anomalies from an overhead low have given way to clearing skies and modest daytime warming, with ensemble guidance showing limited spread around seasonal normals near 61°F. Minor differences among 60–63°F bins stem from subtle variations in boundary-layer mixing, wind speeds, and any residual morning cloud cover that could trim peak temperatures by a degree or two. No precipitation is expected, and the stable high-pressure setup leaves little room for larger deviations before resolution.