textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 1205 PM CDT Sun Jul 5 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 rain chances will increase late week.

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

DISCUSSION

Issued at 1205 PM CDT Sun Jul 5 2026

Will continue to maintain hot and mostly rain-free conditions for much of the forecast period with high pressure over the Four Corners into West Texas in control. Temperatures will be hot with highs in the mid to upper 90s, and some triple digits in the mid to upper Valley/Rio Grande Plains. Heat indices will generally remain between 100 and 110 degrees with a Moderate Heat Risk for most locations, especially as we get later into the week.

The aforementioned high pressure will retreat slightly westward towards the end of the week and along with an increased moisture push from an area of weak low pressure in the Bay of Campeche, rain chances increase late week into the weekend. Otherwise rain chances remain isolated at best.

There is a low risk of rip currents at area beaches becoming moderate to late week.

AVIATION

(18Z TAFS) Issued at 1205 PM CDT Sun Jul 5 2026

VFR conditions will prevail through the TAF period.Southeasterly winds will gust up to 2kt this afternoon before decreasing again this evening.

MARINE

Issued at 1205 PM CDT Sun Jul 5 2026

Favorable marine conditons will prevail on the waters off the lower Texas coast through midweek. Generally seas of 2-3 feet are expected with 4 to 6 second periods. Late week an increased pressure gradient will lead to slightly elevated winds with caution conditions possible, mainly on the Laguna Madre. Isolated showers/thunderstorms, especially later this week may lead to localized areas of increased winds and seas.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 80 95 79 95 / 0 10 0 10 HARLINGEN 77 97 76 97 / 0 10 0 10 MCALLEN 79 101 79 101 / 0 0 0 10 RIO GRANDE CITY 78 101 77 101 / 0 0 0 0 SOUTH PADRE ISLAND 81 88 81 88 / 0 10 0 0 BAYVIEW/PORT ISABEL 79 92 78 93 / 0 10 0 0

BRO WATCHES/WARNINGS/ADVISORIES

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