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 603 PM CDT Sun Jun 21 2026 - Dry conditions return today with generally rain free conditions forecast to persist this week.

- Minor to Moderate Heat Risk is forecast to continue through the week.

- A moderate risk of rip currents continues through Monday afternoon.

DISCUSSION

Issued at 1235 PM CDT Sun Jun 21 2026

High pressure building over the southwestern US will support hat and dry weather through the week. High temperatures are forecast to range from the mid to upper 90s daily. Lingering cloud cover is forecast to decrease this afternoon, with generally sunny to mostly sunny skies forecast through the remainder of the week. The Heat Risk is forecast to generally remain minor to moderate this week. Lower dewpoints look to generally keep Heat Indices below 111 degrees this week, so Heat Advisories likely wont be needed.

AVIATION

(00Z TAFS) Issued at 603 PM CDT Sun Jun 21 2026

Breezy south-southeasterly winds (around 15-20 knots, gusting to 25-30 knots) and scattered to broken VFR conditions continue through sunset this evening, remaining breezy overnight at all TAF sites. Periods of MVFR ceilings are possible at KBRO and KHRL tonight, with the better chances at KBRO, becoming mostly scattered by the early Monday morning hours. VFR conditions resume Monday morning as southeasterly winds pick up to similar speeds as today by Monday afternoon.

MARINE

Issued at 1235 PM CDT Sun Jun 21 2026

Adverse to hazardous conditions are forecast to continue into Monday afternoon, and a Small Craft Advisory is in effect from 1 PM today through 1 PM Monday. Conditions are forecast to improve Monday afternoon with generally favorable conditions returning through the remainder of the week.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 83 94 82 94 / 0 0 0 0 HARLINGEN 79 95 79 94 / 0 0 0 0 MCALLEN 81 96 80 95 / 0 0 0 0 RIO GRANDE CITY 79 97 78 96 / 10 0 0 0 SOUTH PADRE ISLAND 83 89 82 88 / 0 0 0 0 BAYVIEW/PORT ISABEL 82 93 81 92 / 0 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

TX...None. GM...Small Craft Advisory until 1 PM CDT Monday for GMZ130-132-135- 150-155-170-175.


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