A heat advisory is in effect for inland portions of Southeast Texas today, September 13, 2026, from 11 AM to 6 PM due to very hot and humid conditions. High temperatures will range from 93 to 99 degrees Fahrenheit with heat indices between 108 and 110 degrees Fahrenheit. Safety precautions include using air conditioning, limiting strenuous outdoor activities during the afternoon, staying hydrated, and wearing lightweight, light-colored clothing. Affected areas include Houston, College Station, League City, Sugar Land, and surrounding communities.
High temperatures in the low 90s to upper 90s. Heat indices to reach advisory levels despite a chance for isolated to scattered showers along and south of I-10.
It will be another warm, muggy night as temperatures dip into the mid-70s to around 80°F inland and hold in the upper 70s to low 80s along the coast. Moisture will begin pushing back in near sunrise, bringing an increasing chance for coastal showers and thunderstorms, especially near Matagorda and Palacios.
Daily chances for showers and thunderstorms continues with decreasing chances Thursday and Friday. Highs will be mainly in the mid 90s with peak heat indices 107-110F at least through mid-week.
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