Dallas is heading into another hot day Wednesday, with temperatures climbing from the low 80s to near 100 degrees. A Heat Advisory remains in effect through 8 p.m. Wednesday, with heat index values up to 106.
Peak Heat Arrives Wednesday Afternoon
The heat will be intense Wednesday. Outdoor workers, commuters and anyone planning afternoon activities should take frequent breaks in shade or air conditioning.
Another 100-Degree Day Thursday
The heat will stick around Thursday, with a high near 101 and an overnight low around 79 degrees. Friday through Sunday will bring more sunshine and highs near 100, with lows in the upper 70s.
Rain Chances Finally Return Next Week
A small shift arrives late Sunday into Monday, when scattered showers and thunderstorms become possible. More unsettled weather could follow Tuesday. The pattern may offer some relief from the heat, though summer conditions persist.
Heat Safety Remains The Main Concern
Residents should drink plenty of water, wear lightweight clothing and limit strenuous outdoor activity during the hottest part of the day. Never leave children or pets in a parked vehicle, even briefly, and check on neighbors who may be especially vulnerable to heat-related illness.
Health, Dryness and Power-Demand Context
According to Dallas County Health and Human Services, prolonged or intense exposure to hot temperatures can cause heat exhaustion, heat cramps and heat stroke. Those risks make breaks in air conditioning or shade, hydration and checks on vulnerable neighbors especially important during a prolonged hot spell. The heat is also occurring alongside unusually dry conditions. Drought.gov reports that Dallas County had its driest August in 132 years and that January through August 2026 was the county's driest year to date over that period. Meanwhile, ERCOT's records page lists a previous system peak of 89,725 megawatts, set Aug. 19, 2026; that underscores how hot weather can coincide with heavy electricity demand without indicating that this forecast has caused a grid emergency.
Putting the Heat in Context
Dallas’s current run is separate from the area’s historical record. According to National Weather Service Fort Worth/Dallas records, the longest recorded streak of 100-degree days in the Dallas/Fort Worth area was 42 days, from June 23 through Aug. 3, 1980.
For help with energy costs during prolonged heat, Dallas County Health and Human Services says its Comprehensive Energy Assistance Program is available by appointment only, with no walk-ins. Residents can call 214-819-1848 Monday through Friday from 8 a.m. to 5 p.m. to schedule an appointment.
