See that purple area? It includes Canyon Lake, which could see heat-index values as high as 110 degrees over the weekend.
An excessive heat warning has been issued for Canyon Lake and surrounding counties until 7 p.m. Sunday.
The U.S. National Weather Service Austin/San Antonio (NWS) said portions of south-central Texas will see air temperatures ranging from 103 degrees Fahrenheit to 107. Heat index values of up to 105 to 110 degrees are possible.
“The Heat Advisory has been upgraded to an Excessive Heat Warning mainly for expected temperatures Sunday,” NWS said. “However, 103- to 106-degree temperatures are possible today for isolated locations in the Excessive Heat Warning.”
“Extreme heat and humidity will significantly increase the potential for heat-related illnesses, particularly for those working or participating in outdoor activities,” the weather service said.
