A Severe Extreme Heat Warning is in effect for portions of North Texas, including Montague, Cooke, Grayson, Fannin, Lamar, Young, Jack, Wise, Denton, Collin, Hunt, Delta, Hopkins, Stephens, Palo Pinto, Parker, Tarrant, Dallas, Rockwall, Kaufman, Van Zandt, Rains, Eastland, Erath, Hood, Somervell, Johnson, and Ellis counties. The warning is in effect from noon to 8:00 PM CDT on August 18, 2026, as issued by the National Weather Service (NWS).
The warning indicates that dangerously hot conditions with temperatures up to 108 are expected. Heat index values up to 106 may also be experienced in some areas. These conditions could increase the risk for heat-related illnesses, particularly for those working or participating in outdoor activities.
To stay safe during this extreme heat event, take extra precautions by staying hydrated, wearing lightweight and loose-fitting clothing, and limiting strenuous activities to the early morning or evening. Check up on relatives and neighbors, and never leave young children or pets in an enclosed vehicle. If you or someone you know is exhibiting signs of heat stroke, call 911 immediately. Follow guidance from the NWS and local authorities to ensure your safety.
