Recent NWS and model guidance for Seattle on August 1 points to a modest high-pressure ridge supporting afternoon temperatures in the low-to-mid 70s, tempered by a strengthening marine layer and possible light onshore flow that could introduce clouds or brief showers. These conditions explain the tight clustering of market-implied odds around 72–75 °F, with traders weighing the balance between daytime solar heating and marine moderation typical for early August in the Puget Sound region. Ensemble spreads remain narrow given the short lead time, though any delay in marine intrusion or stronger subsidence could push readings toward the upper end of that range, while increased cloud cover would favor the lower outcomes. Updated NWS forecasts and morning soundings will provide the next key signals before resolution.