Unseasonal heatwave forecast to bring record-breaking temperatures to south-central Texas, U.S.
An unseasonal heatwave is forecast to bring record-breaking temperatures of up to 44.5°C (112°F) to south-central Texas this week, prompting heat advisories across the region.
Maximum temperature forecast graphic ending at 05:00 EDT on May 15, 2025. Image credit: NWS
Record high temperatures are forecast for much of south-central Texas through this week into the next, due to an early-season heatwave bringing temperatures of up to 44.5°C (112°F) to some areas.
Forecasts suggest that areas including Austin and San Antonio could experience the highest May temperatures, with high confidence that multiple daily temperature records will be broken during the week.
The intense heat is caused by a high-pressure ridge developing over Texas.
The city of Alice is forecast to experience some of the highest temperatures, with the National Weather Service (NWS) predicting values in the triple digits through the week until Tuesday, May 20.
High humidity in the region will make the heat feel more intense, resulting in high maximum heat index values. The heat index does not indicate the actual air temperature but rather how hot it feels, meaning that a temperature of 38°C (100°F) could feel like 40.5°C (105°F), which would be the effective heat index for the area.
Wednesday is forecast to be the hottest day for the city, with maximum heat index reaching 44°C (111°F), followed by Saturday, May 17, with a forecast high of 43°C (110°F).
The heatwave comes just days after storms struck Alice on May 8, injuring four people and causing widespread damage, which prompted a disaster declaration.
Heat advisories have been issued for much of south-central Texas, including cities such as Austin, San Antonio, Alice, Orange, and San Diego, through Tuesday and Wednesday, May 14.
The National Weather Service has advised residents in affected areas to exercise caution when outdoors, remain hydrated, and stay in air-conditioned environments to prevent heat-related illnesses.
I am an Assistant Editor and Severe Weather & Science Journalist at The Watchers, specializing in real-time severe weather coverage, geophysical event reporting, and research-driven scientific analysis. You can reach me at rishav(at)watchers(.)news.
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