Current National Weather Service and ensemble model guidance for Houston points to an overnight low in the mid-70s on September 26, driven by persistent warm, humid air under light easterly flow and no approaching cold front. This setup limits nocturnal radiative cooling despite clear to partly cloudy skies, keeping temperatures several degrees above the late-September climatological average low near 70°F. Trader positioning around the 72-73°F bin at 48.5% implied probability reflects this consensus, while the 27% odds on 67°F or below and 86°F or higher capture remaining model spread and the possibility of brief clearing or stronger mixing. Updated short-range guidance expected later today will further refine these probabilities ahead of market resolution.