Recent National Weather Service forecasts indicate a frontal passage will shift winds from southerly to northerly by evening on October 15, promoting radiational cooling under partly cloudy skies and driving Dallas minimum temperatures into the upper 50s to low 60s by late night. This dynamic, combined with dew points falling into the 40s, supports the market's emphasis on bins near 63°F or below as plausible outcomes amid model consensus from GFS and local guidance. Earlier warmth with highs near 90°F and overnight readings holding in the low 70s initially accounts for the leading 72–73°F implied probability, reflecting trader weighting of pre-frontal conditions and historical October variability in the region. Updated NWS briefings and next model runs will refine the exact minimum threshold.