textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 1230 AM CDT Wed Apr 22 2026

Key Messages:

* Rain-free conditions with warming temperatures expected through the middle parts of next week.

* Heat begins building as early as next weekend.

DISCUSSION

Issued at 929 PM CDT Tue Apr 21 2026

In the wake of the coastal low/trough that yielded beneficial rainfall across Deep South Texas and the Rio Grande Valley over the past few days, a benign weather pattern has returned to the region. Rain-free conditions are expected to prevail through the middle parts of next week.

During this time, the region will experience a warming trend in temperatures. By next weekend through the early parts of next week, hot (well above average) temperatures will occur over Deep South Texas, courtesy of a building 588-591 dam heat ridge centered over central Mexico.

Wednesday through Friday, high temperatures are progged to be in the upper 80s near the coast to the mid 90s west of IH-69C. Saturday through Wednesday of next week, high temperatures are progged to be in the low to mid 90s near the coast to the upper 90s to lower 100s west of IH-69E. Overnight low temperatures are mainly expected to be in the lower to mid 70s across Deep South Texas through the middle parts of next week.

AVIATION

(06Z TAFS) Issued at 1230 AM CDT Wed Apr 22 2026

MVFR to VFR conditions are expected into late tonight with VFR ceilings expected Wednesday into Wednesday evening.

MARINE

Issued at 929 PM CDT Tue Apr 21 2026

Generally favorable marine conditions will be in place through the middle parts of next week with light to moderate winds and moderate seas with wave heights between 3-5 feet.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 72 87 74 89 / 0 0 0 0 HARLINGEN 68 89 70 90 / 0 0 0 0 MCALLEN 72 92 75 94 / 0 0 0 0 RIO GRANDE CITY 70 93 73 96 / 0 0 0 0 SOUTH PADRE ISLAND 73 80 75 82 / 0 0 0 0 BAYVIEW/PORT ISABEL 70 85 73 87 / 0 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

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