textproduct: Houston/Galveston

KEY MESSAGES

- Seasonably hot conditions will continue through at least early next week. Peak heat index values between 102-107F (39-42C) through Tuesday. - Moderate to high rip current risk along area beaches through the weekend.

- Rain chances re-enter the forecast towards the middle of next week.

DISCUSSION

Issued at 1208 AM CDT Sat Jun 27 2026

Mid-lvl ridging will shift east of the area today, becoming centered over the Lower Mississippi Valley by Sunday and then gradually progressing further northeastward through the upcoming workweek. The proximity of the ridge and its associated subsidence inversion and elevated dry layer will keep rain chances quite low through early next week. The highest chances for a shallow sea-breeze induced shower or two looks to be on Sunday as the capping inversion weakens somewhat, but given meager moisture and forcing, fcst PoPs are still only around 10%. As mentioned in previous discussions a noticeable SAL plume will pass through the area Sunday PM through early Tuesday, bringing renewed dry and hazy conditions.

As the ridge shifts northeast towards the middle of next week, easterly flow on its southern flank will enable some deeper moisture to filter into the area, with PWATs increasing to around 2 inches by Wednesday. Consequently low- medium (20-35%) rain chances return to the forecast Wednesday/Thursday, although the track of a weak upper- lvl disturbance will likely determine how widespread rain coverage is.

The main forecast concern will continue to be seasonably hot and humid conditions with forecast highs in the low to mid 90s, lows in the upper 70s/low 80s and peak heat indices approaching or exceeding 105 degrees each afternoon. As mentioned in previous discussions, although heat indices and WBGT values should remain just below advisory criteria, those with outdoor plans should still take the necessary precautions to avoid heat stress.

AVIATION

(00Z TAF Issuance) Issued at 721 PM CDT Fri Jun 26 2026

VFR conditions will prevail through the remainder of the evening into the overnight hours as southerly winds decrease to around 5-8 kts. Some patchy MVFR ceilings will be possible area-wide overnight into the early morning hours. Any sub-VFR conditions that do develop will mix out through the mid-late morning as winds increase markedly out of the south at around 12-15 kts with higher gusts. Windy conditions will continue into the afternoon.

McNeel

MARINE

Issued at 1208 AM CDT Sat Jun 27 2026

Moderate southerly winds and 3 to 5 foot seas will prevail through the weekend. There will be a moderate to high risk of rip currents along area beaches through early next week. Rain chances will remain very low through early next week...increasing to the low to medium range by mid-week.

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 77 95 78 97 / 10 10 0 0 Houston (IAH) 79 95 79 95 / 10 10 0 0 Galveston (GLS) 84 89 84 89 / 10 10 0 0

HGX WATCHES/WARNINGS/ADVISORIES

TX...High Rip Current Risk through Sunday morning for TXZ436>439.

GM...Small Craft Should Exercise Caution until 7 AM CDT this morning for GMZ330-335-350-355-370-375.