Houston, Texas 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

449
FXUS64 KHGX 191106
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
606 AM CDT Sat Jul 19 2025

...New AVIATION...

.KEY MESSAGES...
Issued at 1255 PM CDT Fri Jul 18 2025

- Isolated showers and thunderstorms will be possible on Saturday,
  but then the next decent chance of precipitation doesn`t re-
  enter the forecast until late next week.

- Hot and humid weather is expected through most of next week.

&&

.DISCUSSION...
Issued at 1058 PM CDT Fri Jul 18 2025

There were a few showers and thunderstorms that developed near
the coast today producing localized spots of near 1" of rain, but
otherwise most of the rainfall associated with that disturbance
we`ve been monitoring missed us to the east. Some lingering
tropical moisture and weakness aloft will continue through
Saturday, so some additional scattered afternoon showers and
storms will be possible generally east of I-45. High pressure then
builds in on Sunday that will persist through at least Wednesday
providing us with hot, humid, but mostly rain-free weather. This
high pressure does begin to shift to the north by Thursday or
Friday with a shortwave sliding westwards along the southern edge
of the high. As of right now, this disturbance will be taking a
very similar track as the disturbance we tracked this week,
skirting along the Gulf coast. This system will be the next decent
chance at showers and thunderstorms, likely reaching coastal
Texas sometime between Thursday night and Saturday morning.

High temperatures through the weekend will be in the low to mid
90s with lows in the mid to upper 70s inland and low to mid 80s
at the coast. Temperatures do increase beginning Monday with most
of the region getting at least into the mid 90s with some isolated
spots into the upper 90s. Afternoon max heat indices will be in
the 103- 107 degree range. These conditions will continue until
that disturbance approaches from the east at the end of the week.

Fowler

&&

.AVIATION...
(12Z TAF Issuance)
Issued at 606 AM CDT Sat Jul 19 2025

Patchy fog at CXO early this morning should dissipate by 14-15Z.
Otherwise, VFR conditions expected throughout the day with winds
starting out south-southwesterly and becoming southeasterly by the
afternoon. Isolated to scattered showers are expected to develop
later this morning into the afternoon hours mainly near and north
of the I-10 corridor. Coverage should be more sparse than it was
on Friday, so this has been reflected in most TAFs with a PROB30.
A few thunderstorms could develop during the afternoon, but
confidence on exactly where those will develop is on the low
side. Anything that develops will dissipate shortly after sunset.
Going into early Sunday morning, expecting MVFR ceilings to
stream in over the northern terminals (CLL/UTS).

Batiste

&&

.MARINE...
Issued at 1058 PM CDT Fri Jul 18 2025

Isolated showers will be possible Saturday morning, but then
mostly dry conditions are expected to persist through at least
midweek next week as high pressure builds across the region.
Expect low seas and light onshore winds to prevail.

Fowler

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  94  76  94  75 /  10   0   0   0
Houston (IAH)  94  78  95  76 /  30   0  10   0
Galveston (GLS)  90  83  91  82 /  20  10   0   0

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...None.
GM...None.
&&

$$

DISCUSSION...Fowler
AVIATION...Batiste
MARINE...Fowler