Recent forecasts from NOAA-aligned models and private meteorology services indicate a clear, dry night ahead for Seattle with light northerly winds around 5 mph and minimal cloud cover, favoring radiative cooling under typical early-fall conditions. This setup supports overnight lows clustering near the 52–55°F range, consistent with the market’s tight grouping of implied probabilities around those bins and the seasonal average low of 53°F. Minor model differences in exact wind speed, dew-point depression, and the timing of any residual marine layer influence the spread between 52–53°F and 56–57°F outcomes. With no incoming fronts or significant moisture expected before dawn on the 16th, traders are weighting current ensemble guidance heavily while acknowledging small uncertainties in microscale cooling rates that could shift the recorded minimum by a degree or two.