textproduct: Houston/Galveston
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
- Seasonably hot conditions will continue through the weekend. Peak heat index values between 102-107F (39-42C) through Sunday.
- Rain chances re-enter the forecast early-mid next week.
DISCUSSION
Issued at 132 PM CDT Thu Jun 25 2026
Mid-upper ridging centered over northern Mexico and West Texas will drift east and become repositioned over the Lower Mississippi Valley this weekend. Despite prevailing southerly llvl winds and muggy conditions, subsidence aloft should mostly inhibit precip development. Partly cloudy and some intermittently hazy conditions are anticipated with daytime temperatures in the low- mid 90s. Heat indices should peak slightly below advisory criteria (108F/42C). Winds in the 10-15mph range should provide some limited relief, but those with outdoor plans, and visitors to the local area, should take necessary heat precautions. With the slightly higher wind speeds, overnight lows will probably be a few degrees higher than what we've seen as of late.
Heading into early & middle parts of next week, the mid-upper ridging to our east will strengthen but lift northward toward the Tennessee & Ohio Valleys. This will put the northwestern Gulf Coast back into the easterlies and allow for some increased moisture to move in and less hostile subsidence aloft...resulting in the return of some iso-sct rain chances to the forecast. 47
AVIATION
(00Z TAF Issuance) Issued at 627 PM CDT Thu Jun 25 2026
VFR conditions will generally remain prevalent through the period except for a brief round of MVFR ceilings that may impact areas west and northwest of the Houston metro area again overnight into early Friday morning. Winds remain southerly through the period, picking up to 10-15 knots with a few gusts around 20 knots again late Friday morning into Friday afternoon.
MARINE
Issued at 132 PM CDT Thu Jun 25 2026
With a tighter pressure gradient expected to develop, look for a slight increase in southerly winds and seas Friday through the weekend. Speeds may flirt with caution flag criteria at times. Rain chances will be very low for the next several days. 47
PRELIMINARY POINT TEMPS/POPS
College Station (CLL) 76 94 76 95 / 0 0 10 0 Houston (IAH) 77 93 77 94 / 0 0 0 0 Galveston (GLS) 82 89 83 89 / 0 10 10 0
HGX WATCHES/WARNINGS/ADVISORIES
TX...None. GM...None.
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