textproduct: Brownsville/Rio Grande Valley

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

KEY MESSAGES

Updated at 648 PM CDT Sat Jul 4 2026

* Hot conditions continue through the next week. Moderate (level 2 of 4) Heat Risk each day with heat indices between 100 and 110 degrees each day.

* Generally rain free conditions are expected, though could see some isolated sea breeze activity.

* There is generally a Low Risk of rip currents at area beaches.

DISCUSSION

Issued at 1205 PM CDT Sat Jul 4 2026

Hot and generally rain free conditions is expected across Deep South Texas and the Rio Grande Valley into next week. Temperatures will rise to the mid to upper 90s each day, with triple digits possible across the upper Valley/Rio Grande Plains. Heat indices will be generally between 100 and 110 degrees each day, maintaining generally a Moderate Heat Risk (level 2 of 4) each day over the next week.

While most areas will remain dry will continue to see a low chance (10% or less) of shower/thunderstorms this week, primarily along the sea breeze.

There is a low risk of rip currents at area beaches.

AVIATION

(00Z TAFS) Issued at 648 PM CDT Sat Jul 4 2026

Breezy southeasterly winds are likely to gradually diminish through sunset and into the early nighttime hours tonight, though could remain elevated at KMFE overnight (10-15 knots, gusts around 20-25 knots). Amendments for wind are still possible. Otherwise, VFR conditions are likely to persist, with partly to scattered clouds skies tonight becoming partly cloudy throughout tomorrow morning. Southeasterly winds gradually increase to around 10-15 knots, with gusts around 20-25 knots, by tomorrow afternoon.

MARINE

Issued at 1205 PM CDT Sat Jul 4 2026

Generally favorable conditions will continue on the waters off the lower Texas coast. Generally seas of 2-3 feet are expected with 4 to 6 second periods.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 81 95 80 95 / 0 0 0 0 HARLINGEN 78 97 76 97 / 0 0 0 10 MCALLEN 80 101 79 101 / 0 0 0 0 RIO GRANDE CITY 79 102 78 101 / 0 0 0 0 SOUTH PADRE ISLAND 81 88 81 88 / 10 10 0 0 BAYVIEW/PORT ISABEL 79 93 78 92 / 0 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

TX...None. GM...None.

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