textproduct: Houston/Galveston

KEY MESSAGES

- Hot conditions will continue this week, with potential for heat stress issues as heat indices approach 105-107F (41-42C) each day and WBGT risk peaks in the red category.

DISCUSSION

Issued at 105 PM CDT Wed Jun 24 2026

Not too much to write about, as high pressure and upper ridge settle in across the area. The building ridge will keep dry conditions in place through much of the period, with drier air helping to alleviate the higher heat indices we've experiences the last week or so. That said, heat may still be a factor for those spending a lot of times outdoors or those vulnerable to heat, so caution should be used if spending time outdoors. Otherwise, expect highs to warm into the lower to mid 90s and overnight lows in the lower to mid 70s.

Moisture will begin to increase this weekend, as the ridge moves east of the area. Meanwhile, weaknesses in the upper ridge may provide some forcing for convection, if any mesocale features lead to a focus for CI. We'll see an increase in afternoon rain chances, typical of our summertime pattern.

AVIATION

(00Z TAF Issuance) Issued at 635 PM CDT Wed Jun 24 2026

VFR conditions will generally prevail across the region through the forecast period. The exception may be a brief round of MVFR ceilings and/or visibility reductions that could impact a few terminals mainly between 10-14Z across locations west and northwest of the Houston metro area. Confidence was low enough to keep MVFR conditions out of the IAH/HOU TAF. Light southerly winds otherwise look to continue through the period.

MARINE

Issued at 105 PM CDT Wed Jun 24 2026

Light to moderate southerly flow will prevail through the workweek. Seas will generally run 2 to 4 ft through the workweek increasing to 3 to 5 ft into the weekend.

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 73 93 75 94 / 0 0 0 0 Houston (IAH) 75 93 77 93 / 0 0 0 0 Galveston (GLS) 81 88 82 89 / 0 0 0 0

HGX WATCHES/WARNINGS/ADVISORIES

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