Persistent southeast flow and elevated dew points near 75°F from a warm, humid airmass are anchoring forecast overnight lows for Houston on October 13 in the mid-70s, according to National Weather Service guidance. Showers likely during the afternoon and evening may enhance localized cooling through evaporative effects or increased cloud cover, creating modest downside risk that aligns with the market-implied 50% probability on 71°F or below. Model consensus shows limited variability in minimum temperatures given the strong southerly steering and lack of frontal passage, though any earlier or heavier rainfall could nudge readings toward the lower end of the 72-81°F range. This setup deviates from climatological October lows near 64°F, sustaining trader focus on near-term observational updates from Houston Intercontinental Airport.