textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 554 AM CDT Sun Jul 26 2026

- Seasonable temperatures through the weekend. A warming trend will result in widespread triple-digit temperatures and heat index values for most of next week. - Moderate heat risk through the weekend, increasing to major heat risk next week.

- A moderate risk of rip currents along the lower Texas beaches through Saturday evening.

DISCUSSION

Issued at 1047 PM CDT Sat Jul 25 2026

Heat will be the primary concern through the period as an upper- level ridge across the Central US looks to remain in place through the week. Rain free conditions are forecast to continue through the work week with sunny to mostly sunny skies prevailing across the area.

There is a Moderate Heat Risk (level 2 of 4) across the area Sunday afternoon as high temperatures are forecast to reach the upper 90s to low 100s. Heat index values are forecast to peak around 105-110 across the area, and Heat Advisories likely wont be needed.

High temperatures are forecast to gradually increase through the week, with widespread 100-105 degree temperatures forecast by Monday climbing to the 102-110 range by Friday. Moderate (level 2 of 4) to Major (level 3 of 4) Heat Risk is expected across the area through the week, with portions of the Rio Grande Valley possibly reaching Extreme Heat Risk (level 4 of 4) late in the week. Heat index values are forecast to range between 110 and 115 through the work week, with a few locations possibly hitting 117 late in the week. Heat Advisories will likely be needed daily Monday- Friday, and a few Extreme Heat Warnings may be needed towards the end of the week.

AVIATION

(12Z TAFS) Issued at 554 AM CDT Sun Jul 26 2026

VFR will prevail at the aerodromes through the next 24 hours. Breezy winds during the daytime will diminish to lighter levels at night. Skies will be rain-free with limited cloud cover.

MARINE

Issued at 1047 PM CDT Sat Jul 25 2026

Favorable marine conditions are forecast to continue Sunday, however increased southeasterly winds along the Lower Texas Coast will likely result in adverse conditions along the Laguna Madre and portions of the Gulf waters each afternoon through the remainder of the forecast. Small Craft Should Exercise Caution headlines will likely be needed, and a brief Small Craft Advisory cant be ruled out.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 96 79 97 81 / 10 0 0 0 HARLINGEN 98 76 100 78 / 0 0 0 0 MCALLEN 102 79 103 80 / 0 0 0 0 RIO GRANDE CITY 102 77 104 78 / 0 0 0 0 SOUTH PADRE ISLAND 88 81 89 81 / 10 0 0 0 BAYVIEW/PORT ISABEL 94 78 96 79 / 10 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

None.