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 552 PM CDT Mon Aug 10 2026
- Unseasonably hot and humid conditions are expected to continue through this next week.
- Moderate (level 2 of 4) to Major (level 3 of 4) Heat Risk could increase to areas of Extreme (level 4 of 4) Heat Risk throughout the week.
- Moderate rip current risk is possible later this week as the pressure gradient tightens and conditions become more breezy.
DISCUSSION
Issued at 1213 PM CDT Mon Aug 10 2026
Upper-level ridging remains dominant over the Central-Southern US, with surface level high pressure over the Gulf. This pattern is expected to continue throughout the next week, which will continue to support hot, humid, and generally rain-free conditions for Deep South Texas.
Heat Risk will be of the most concern throughout the week, as temperatures slowly warm throughout the week due to strengthening high pressure. Unseasonably hot temperatures are expected to continue. Moderate (level 2 of 4) to Major (level 3 of 4) Heat Risk could increase to Major to Extreme (level 4 of 4) Heat Risk by the end of the week, with Heat Advisories possible.
Conditions are expected to become increasingly windy throughout the week as the pressure gradient tightens. This could support an increased risk of rip currents at area beaches later in the week.
AVIATION
(00Z TAFS) Issued at 552 PM CDT Mon Aug 10 2026
VFR will prevail at the aerodromes through the next 24 hours. Diminishing winds overnight tonight will become moderate to breezy on Tuesday. Convection is not anticipated.
MARINE
Issued at 1213 PM CDT Mon Aug 10 2026
Overall favorable conditions are expected throughout the week with light to moderate southeasterly winds and low seas. However, there is a tightening pressure gradient throughout the week that will increase wind speeds and make intermittent Small Craft Caution and Small Craft Advisory conditions possible later this week on the Bay and even possible on portions of the Gulf waters.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 81 96 81 96 / 0 10 0 0 HARLINGEN 77 99 77 100 / 0 0 0 0 MCALLEN 81 102 81 103 / 0 0 0 0 RIO GRANDE CITY 79 103 78 104 / 0 0 0 0 SOUTH PADRE ISLAND 81 89 81 90 / 0 10 0 0 BAYVIEW/PORT ISABEL 79 95 79 96 / 0 0 0 0
BRO WATCHES/WARNINGS/ADVISORIES
None.
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