Persistent high pressure and southerly flow across southeast Texas are sustaining elevated overnight lows near 80°F in Houston, with National Weather Service forecasts calling for Monday night minima of 78–81°F under mostly clear to partly cloudy skies. High humidity reduces radiative cooling rates, while light winds limit mixing that could otherwise drop temperatures further. No approaching cold fronts or organized convection appear likely to alter this pattern before resolution. Market-implied odds near 46% for 88°F or higher versus 45.5% for 69°F or below reflect trader assessment of forecast uncertainty ranges and potential measurement-site variations, even as model consensus clusters tightly around the upper 70s to low 80s. Updated NWS briefings tomorrow morning will refine the final observed low.