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 1227 PM CDT Mon May 11 2026

Key Messages:

- Warm and rain free conditions are forecast through Friday.

- Heat risk returns to moderate or higher levels by this weekend.

- Adverse to hazardous marine conditions may develop this weekend.

DISCUSSION

Issued at 1227 PM CDT Mon May 11 2026

In the wake of last nights cold front, a quieter pattern is forecast to take hold this week with near-zero rain chances and warm temperatures forecast through the work week. An upper level ridge will likely set up over the Central US Tuesday, with surface winds shifting easterly to southeasterly. High temperatures are forecast to range in the 80s Today and Tuesday, warming into the 90s through the later half of the week.

Increasing humidity this weekend could lead to increased apparent temperatures, ranging from 100 to 108 degrees. A moderate heat risk is likely next weekend and Heat Advisories may be needed.

AVIATION

(18Z TAFS) Issued at 1227 PM CDT Mon May 11 2026

VFR conditions are forecast to continue through the TAF period. Northerly winds around 10 kts with infrequent gusts to around 20 kts. Gusts are forecast to diminish this afternoon with light northerly winds forecast overnight.

MARINE

Issued at 1227 PM CDT Mon May 11 2026

Generally favorable marine conditions are forecast to continue through Thursday. Light to moderate northerly winds are forecast to shift easterly to southeasterly Tuesday, with slight to moderate seas persisting through the forecast. Wind speeds along the Laguna Madre and nearshore Gulf waters are forecast to increase to around 20 knots by the end of the week, possibly requiring Small Craft Should Exercise Caution headlines or Small Craft Advisories beginning Friday.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 73 87 70 89 / 0 0 0 0 HARLINGEN 69 86 66 89 / 0 0 0 0 MCALLEN 72 88 70 91 / 0 0 0 0 RIO GRANDE CITY 71 88 69 90 / 0 0 0 0 SOUTH PADRE ISLAND 76 81 75 83 / 0 0 0 0 BAYVIEW/PORT ISABEL 73 84 70 87 / 0 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

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

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