Forecasts from the National Weather Service and other models indicate the daily minimum temperature in Seattle on August 27 will likely fall in the mid-to-upper 50s °F, driven by southwest flow and increasing marine influence that limits overnight radiational cooling. Current conditions feature partly cloudy skies with southwest winds of 5–15 mph and dew points near 55 °F, supporting efficient mixing that prevents deeper cooling. Model consensus points to lows of 57–59 °F, aligning closely with the late-August climatological average of 55.9 °F while recent days have trended slightly above normal. The market’s heaviest weighting on the 56–59 °F bins reflects this narrow forecast envelope, with limited upside risk from clearing skies or downside from stronger onshore winds. Updated model runs and NWS briefings expected overnight will provide the final inputs before resolution.