Heat Advisory

Locations Affected

San Antonio, TX ∙ Austin, TX ∙ Round Rock, TX ∙ New Braunfels, TX ∙ Georgetown, TX ∙ Pflugerville, TX ∙ Cedar Park, TX ∙ San Marcos, TX ∙ Oak Forest, TX ∙ Adkins, TX

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Austin/San Antonio TX 401 PM CDT Thu Aug 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT SUNDAY... * WHAT...Temperatures up to 104 and heat index values up to 112 expected. * WHERE...The northern Hill Country, I-35 Corridor, and Coastal Plains. * WHEN...Until 7 PM CDT Sunday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

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