Heat in Northern Hidalgo County, Texas

Heat June 19, 2026 · Northern Hidalgo County, Texas

What the National Weather Service wrote

The third day of a trifecta of dangerous heat saw the Automated Weather Observing System (AWOS) at the South Texas Int'l. Airport record a peak heat index value 113 during the mid afternoon, with 5:30 hours of values between 111 and 113F.

The wider storm

As developing Tropical Storm Arthur moved along the middle Texas coast (June 17) and as a degenerated low pressure system along the Louisiana Coast (June 18), very hot air descended on the southern tip of Texas, with record extreme heat index, or feels-like, temperatures for the entire region on the 18th. The high heat index values held on into June 19th, before unsettled weather brought slightly lower temperatures and pockets of rain by the 20th, which ended the short but brutal window of extreme heat.

Source: NOAA Storm Events Database, event 1357299. Narratives are written by the National Weather Service forecast office that issued the report.

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