Houston's Sizzling Summer Showdown: Heat Dome Brings Triple-Digit Temperatures

Houstonians, buckle up for a sweltering summer showdown as a strengthening heat dome is expected to bring the city's first prolonged stretch of triple-digit temperatures. This heat wave, which is expected to settle over Southeast Texas for much of the upcoming workweek, has forecasters warning temperatures will climb into the upper 90s and low 100s, with heat index values reaching as high as 112 degrees. The prolonged heat could also mark Houston's first sustained stretch of triple-digit temperatures this summer, making it a summer to remember for many residents.

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. This heat dome is a result of a persistent area of high pressure that dominates the region, causing the air to sink and compress, leading to the formation of a heat dome. The heat dome acts like a lid, trapping hot air and preventing cooler air from entering the region.

Article continues below this ad. In preparation for the heat, residents are urged 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. Additionally, residents are advised to check on their neighbors, especially the elderly and vulnerable populations, who may be more susceptible to heat-related illnesses.

"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. This quote sets the tone for what's to come, as residents can expect temperatures to soar and the heat index to reach sweltering levels. 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 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. As the heat continues to build, residents may experience heat exhaustion and heat stroke, which can be life-threatening if not treated promptly. Residents are advised to take precautions and stay informed about the latest weather updates to stay safe.

By signing up, you agree to our Terms Of Use and acknowledge that your information will be used as described in our Privacy Policy. 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. As the heat continues to dominate the region, residents are advised to remain vigilant and take all necessary precautions to stay safe. With temperatures expected to soar and the heat index to reach sweltering levels, it's essential to prioritize heat safety and take all necessary precautions to protect yourself and your loved ones. Stay informed, stay safe, and stay cool, Houston!