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 1204 PM CDT Mon Mar 23 2026

Key Messages:

* Above normal temperatures continue through the week.

* Dry conditions will prevail into next weekend.

* Ongoing drought and very dry grass/brush mean wildfires can start easily. Use caution with outdoor activities.

DISCUSSION

Issued at 1204 PM CDT Mon Mar 23 2026

Mid-level high pressure over the Desert Southwest into western Texas will maintain well above normal high temperatures (upper 80s to mid 90s) through Friday. Overnight lows will remain in the 60s. This weekend a weak cold front will sag south early Saturday into Deep South Texas bringing slightly cooler and more seasonable temperatures for the weekend. The front could also bring some very isolated showers along the river early Saturday. Chances remain low at around 15 5 or less.

While winds will remain generally low to moderate through Wednesday, and increasing pressure gradient will lead to higher winds on Thursday and Friday, where there is a greater chance for fire weather concerns and Fire Danger Statements may be necessary. Regardless, the ongoing drought with critical to extremely dry fuels could lead to rapid wildfire growth if ignited.

AVIATION

(18Z TAFS) Issued at 1204 PM CDT Mon Mar 23 2026

VFR conditions well prevail through the TAF period. Southeasterly winds will decrease and become light overnight into Tuesday morning.

MARINE

Issued at 1204 PM CDT Mon Mar 23 2026

Generally favorable marine conditions are expected on the waters off the lower Texas coast with wave heights around 3 ft and 5 to 6 second periods. Could see some caution conditions each afternoon, mainly on the Laguna Madre, with a slightly enhanced afternoon pressure gradient.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 66 86 67 87 / 0 10 0 0 HARLINGEN 62 89 64 90 / 0 10 0 0 MCALLEN 66 92 69 94 / 0 0 0 0 RIO GRANDE CITY 63 92 65 95 / 0 0 0 0 SOUTH PADRE ISLAND 69 78 69 78 / 0 10 0 0 BAYVIEW/PORT ISABEL 65 84 66 84 / 0 10 0 0

BRO WATCHES/WARNINGS/ADVISORIES

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

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