**Official National Weather Service forecasts for Houston Intercontinental Airport point to an overnight low of 77–78°F on October 13, 2026, under continued southerly flow from the Gulf of Mexico.** Persistent high dew points and humidity are limiting nocturnal cooling despite partly cloudy skies and only a modest chance of showers or thunderstorms. Model consensus supports minimum temperatures in the upper 70s, consistent with recent climatological patterns of warm early-to-mid October conditions in southeast Texas. Market-implied odds place notable probability on the 71°F-or-below bin alongside several 72–81°F ranges, reflecting trader assessment of forecast uncertainty and potential model shifts before resolution. Key upcoming data include updated NWS short-range guidance and any revisions to steering patterns or moisture transport.