Triple-digit heat is expected to settle over Southeast Texas for much of the upcoming workweek, with forecasters warning temperatures will climb into the upper 90s and low 100s, and heat index values could reach as high as 112 degrees.
The National Weather Service expects the hottest conditions to begin Sunday as a strengthening area of high pressure—often referred to as a “heat dome”—expands over Texas. Forecasters say the pattern will suppress rain chances while pushing afternoon temperatures into the upper 90s and low 100s through at least midweek, with Heat Advisories likely at times.
“Things really heat up Sunday and beyond where Southeast Texas will feel like a sizzling plate of fajitas…minus the deliciousness,” NWS forecasters wrote Saturday morning.
The heat marks a sharp turnaround from earlier this week, when the remnants of Tropical Storm Bertha brought widespread rainfall to much of Southeast Texas. Space City Weather meteorologist Matt Lanza wrote Friday that drier air moving into the region would bring an end to the recent stretch of wet weather while allowing temperatures to climb back into the upper 90s and low 100s through next week.
The prolonged heat could also mark Houston’s first sustained stretch of triple-digit temperatures this summer. Houston Chronicle meteorologist Justin Ballard reported Saturday that forecast confidence continues to increase for several consecutive 100-degree days beginning early next week as high pressure strengthens across Texas.
The National Weather Service forecasts heat index values between 104 and 112 degrees through much of the upcoming workweek. Overnight lows will remain in the upper 70s and low 80s, providing little relief from the daytime heat.
Forecasters said patchy fog could develop during the pre-dawn and early morning hours over the next several days, while rain chances remain limited outside of a few isolated showers Sunday afternoon.
Looking ahead, the National Weather Service said there is a “non-zero chance” a backdoor cold front could approach Southeast Texas late next week, potentially increasing rain chances if the current pattern changes. Forecasters cautioned, however, that confidence remains low that far into the forecast.
The National Weather Service is urging residents to stay hydrated, take frequent breaks if working or exercising outdoors, wear lightweight clothing and never leave children or pets in parked vehicles. Pet owners are also encouraged to check pavement temperatures before walking dogs, as hot surfaces can quickly burn their paws.