Recent National Weather Service and model guidance point to a high temperature in the upper 50s to mid-60s°F for Seattle on September 29, with the most likely range centered near 61–63°F under overcast skies and a 70% chance of rain from an incoming frontal system. Southwesterly winds of 10–20 mph with gusts to 30 mph will enhance mixing and limit daytime warming relative to the clearer, calmer conditions of the prior two days. Ensemble spread and slight differences in frontal timing create the tight clustering among the 60–65°F bins, while lower-probability tails reflect uncertainty in exact cloud cover or precipitation timing that could shave or add a few degrees. Updated NWS point forecasts and high-resolution model runs expected overnight will provide the final inputs before resolution.