Recent National Weather Service forecasts and ensemble model guidance for Seattle point to a daily high in the low-to-mid 70s on July 12, with 72–75 °F ranges capturing the bulk of market-implied probability. Marine air from the Pacific and a moderating onshore flow under typical summer high pressure limit afternoon warming, while any strengthening of an offshore ridge or reduced cloud cover could push readings toward 76 °F or higher. El Niño conditions emerging in the tropical Pacific add a slight background warming signal for the broader Northwest, though summer impacts remain modest compared with winter effects. Short-term model runs from the National Weather Service will provide the next key updates as the 12-hour forecast window approaches.