Current forecast models from NOAA and other agencies point to an overnight low in the upper 40s to low 50s Fahrenheit for Seattle on October 16, driven by clear to partly cloudy skies, light variable winds, and a building upper-level ridge promoting mild offshore flow. This setup limits radiative cooling compared to typical autumn patterns, keeping temperatures several degrees above the 46.5°F historical average low. Market-implied odds clustered around 46–53°F ranges reflect uncertainty in exact minimums, which hinge on cloud timing, dew point trends, and whether any brief marine influence develops before dawn. Official resolution will use Sea-Tac airport observations, where model spreads and local variability create the tight probability distribution.