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 1233 PM CDT Mon Jun 8 2026
- Low to medium rain chances continue this afternoon before drier conditions return. Low to medium rain chances return Friday and Saturday.
- Temperatures gradually increase through the week with mid to upper 90s across much of the region by Wednesday.
- Moderate Heat Risk is expected through the week.
DISCUSSION
Issued at 1233 PM CDT Mon Jun 8 2026
Some isolated to scattered showers and thunderstorms will likely continue through the afternoon, gradually moving further inland before diminishing this evening. An upper level ridge over the Gulf looks to build westward across South Texas tonight and Tuesday. This will likely support drier conditions through Thursday, with rain chances generally remaining less than 10%. This pattern looks to break down by the end of the week, and sea breeze showers and thunderstorms again Friday and Saturday afternoons.
Hot temperatures will be the primary concern this week, as afternoon high temperatures climb to the mid to upper 90s, while heat index values ranging from 105 to 110 degrees through the later half of the week. A Moderate heat Risk is forecast through the week, however heat advisories are unlikely to be needed.
AVIATION
(18Z TAFS) Issued at 1233 PM CDT Mon Jun 8 2026
Generally VFR ceilings are forecast to continue this afternoon, dropping to MVFR levels overnight. VFR conditions are forecast to return after sunrise Tuesday. Gusty southeasterly winds are forecast to continue into the evening, with wind gusts diminishing overnight.
MARINE
Issued at 1233 PM CDT Mon Jun 8 2026
Generally light to moderate winds and slight to moderate seas are forecast through the period, however winds speeds along the coast may increase each afternoon, which could result in brief Small Craft Should Exercise Caution headlines.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 81 92 81 92 / 10 0 0 0 HARLINGEN 78 92 77 92 / 10 0 10 10 MCALLEN 80 95 79 96 / 10 0 10 10 RIO GRANDE CITY 79 96 77 97 / 10 0 0 0 SOUTH PADRE ISLAND 83 87 83 87 / 0 0 10 10 BAYVIEW/PORT ISABEL 81 90 81 90 / 0 0 10 0
BRO WATCHES/WARNINGS/ADVISORIES
TX...None. GM...None.
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