Recent National Weather Service and private model guidance for Seattle on September 24 points to an overcast day with a frontal passage, yielding afternoon highs near 59–62 °F amid light northerly winds and a 60–90 % chance of showers. This represents a notable cool-down from the prior two days’ mid- to upper-60 °F readings and sits several degrees below the late-September climatological normal of roughly 68 °F. The tight clustering of market-implied probabilities around the 58–63 °F bins reflects modest forecast spread in the timing and intensity of cloud cover and precipitation, which directly modulates daytime maximum temperatures. Updated model runs and official NWS briefings over the next 24–48 hours will likely narrow the range as the system’s arrival becomes clearer.