Current National Weather Service forecasts and ensemble models indicate a minimum temperature in Seattle on August 29 most likely in the 54–55°F range, driven by an incoming low-pressure system producing widespread cloud cover, light rain, and southerly winds that limit nocturnal radiational cooling. These conditions follow a period of gradual clearing on August 28, with dew points remaining elevated near 52–55°F and minimal wind shear, keeping surface temperatures from dropping further. Traders assign the highest implied probability to 54–55°F because official point forecasts consistently resolve in the mid-50s, though minor shifts in the timing of showers or marine air intrusion could push the observed low into the adjacent 52–53°F or 56–57°F bins. Updated model runs and NWS briefings through the morning of August 29 will provide the final observational data for market resolution.