**Persistent late-summer heat and high humidity produced an elevated overnight minimum temperature in Houston on August 27, 2026.** Official National Weather Service observations at Houston Intercontinental Airport recorded a minimum of 82 °F shortly after 6 a.m. CDT, seven degrees above the 1991–2020 normal of 75 °F, with the maximum reaching 100 °F later that afternoon under mostly clear to partly cloudy skies and light southerly flow. Trader consensus strongly favored the 80–81 °F bucket (96.5 % implied probability) because model guidance and climatological trends pointed to continued warmth without significant cooling mechanisms such as a frontal passage or widespread rainfall. The broader August pattern featured above-average temperatures across southeast Texas, consistent with the observed +7 °F departure and the absence of any synoptic features capable of dropping the low into the mid-70s or below. Realistic scenarios that could have altered the outcome include an unexpected cold front or heavy overnight convection triggering evaporative cooling; neither materialized. The market-implied odds therefore reflected the high-confidence scientific expectation of a warm minimum based on verified observations and standard forecast variables.