Current National Weather Service and private forecasts for Seattle on August 31 indicate a high in the low-to-mid 70s under mostly sunny skies, with northerly winds strengthening in the afternoon to support modest warming. Model consensus centers on daytime maxima near 72–75 °F, aligning with the market’s leading 74–75 °F bin at 50.5 % implied probability and the secondary 76–77 °F outcome. Recent model runs have shown little day-to-day shift, though subtle differences in cloud cover or wind timing could nudge the peak a degree or two. Traders appear to weight the official forecast guidance heavily, with lower-probability bins reflecting residual uncertainty in afternoon heating under variable marine influence.