Recent National Weather Service guidance and ensemble model consensus indicate a post-frontal regime will deliver the primary driver of trader positioning, with northerly winds of 10–20 mph advecting cooler, drier air into southeast Texas. Clear skies and reduced humidity on October 17 will limit daytime heating, supporting afternoon highs clustered near 68–71 °F according to the latest runs. This marks a sharp departure from the October climatological average of roughly 82 °F. The tight split between the 68–69 °F and 70–71 °F brackets reflects minor differences in boundary-layer mixing and exact wind speeds across guidance, while the 23 % implied odds on 82 °F or higher capture residual model uncertainty or a possible slower frontal passage. Updated NWS briefings and morning model cycles on October 16 will provide the next key data points for resolution.