Houston, Texas 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

305
FXUS64 KHGX 051106
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
606 AM CDT Sun Apr 5 2026

...New AVIATION...

.KEY MESSAGES...

- Cooler and breezier today with a slight chance of light rain
  (mostly south of I-10).

- Small Craft Advisory for the Bays and Gulf through Monday
  morning due to hazardous winds and seas.

- Gradual warm-up expected for the second half of the week along
  with the chance for showers.

&&

.DISCUSSION...
Issued at 1208 AM CDT Sun Apr 5 2026

Saturday`s showers and storms are departing to the east while
cooler, breezy conditions filter southward into SE Texas in the
wake of a cold front. Average afternoon highs are near 80 degrees
this time of year. We will be cooler than normal today, with
afternoon temperatures in the upper 60s to low 70s (perhaps cooler
in some areas if cloud cover is thick enough). Despite the
departure of the aforementioned showers/storms, there remains a
parade of mid/upper vort maxes that are streaming into the region
from Mexico. South Texas should have sufficient moisture and lift
to keep rain chances elevated for much of Sunday. For SE Texas, I
suspect that we`ll have lift and sufficient mid/upper moisture
for rain. However, LL moisture will be lacking as dry air advects
southward behind the front. HRRR and 3KM NAM show this well,
featuring a fairly active simulated radar activity while the sfc
QPF below is rather tame.....a bark bigger than the bite
situation. That being said, I cannot promise you that we won`t
have at least some rain shower activity, especially for those
south of I-10 and especially near the coast. Waves of mid/upper
disturbances will keep a chance of showers across our southern and
coastal zones into Sunday night. PoPs range from ~20% near I-10
to 30-50% at the coast. Near Matagorda Bay and areas offshore,
PoPs are higher (60-70%) due to higher LL moisture. Sunday night
is looking a tad chilly, with lows ranging from the upper 40s in
our northernmost zones to near 60 at the coast. Worth mentioning
that guidance varies significantly regarding the northern extent
of the rain today.

Temperatures are expected to skew a little cooler than normal
through mid-week. But the return of deep onshore flow will
gradually increase both temperatures and humidity as the weak
progresses. By Thursday and Friday, many locations could be back
above 80 degrees with dew points well into the 60s. Large scale
lift is expected to enter the picture toward`s end, increasing the
chance of showers and thunderstorms by Thursday and especially
Friday.

Self

&&

.AVIATION...
(12Z TAF Issuance)
Issued at 606 AM CDT Sun Apr 5 2026

Ceilings are gradually lifting as deeper, cooler air filters in
from the north. Metro & coastal areas should trend toward VFR as
the morning progresses (though overcast mid-upper level decks
should prevail). NNE winds are in the process of increasing and
expect some gusts at or slightly above 20kt during the day. Some
mid-upper level disturbances pass overhead today & tonight and
could see some returns on radar. With the exception of offshore
areas, recent model guidance suggests the vast majority of it
should mainly be virga inland considering the dry subcloud layer.
47

&&

.MARINE...
Issued at 1208 AM CDT Sun Apr 5 2026

Strong north to northeast winds and building seas are expected
today. Winds could weaken somewhat Sunday afternoon before
increasing again late in the evening into Monday morning. There is
a chance of showers and isolated thunderstorms through Sunday
night and possibly into Monday. Winds may gust near 30 knots at
times, with offshore seas easily reaching 6-9 feet. Winds and
seas should decrease by Monday afternoon. Expected a gradual
veering of the winds, with east to southeast flow by the second
half of the week. We are monitoring the potential for a moderate
to strong fetch across the northern Gulf later in the week that
could enhance waves and swell. Based of some of the latest trends,
it`s possible that the current wave height forecast is too
conservative for Thursday into next weekend.

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  69  51  72  47 /   0   0   0   0
Houston (IAH)  71  53  74  52 /  10  10  10   0
Galveston (GLS)  71  60  71  63 /  30  30  20   0

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...None.
GM...Small Craft Advisory until 1 PM CDT Monday for GMZ330-335-350-
     355-370-375.

&&

$$

DISCUSSION...Self
AVIATION...47
MARINE...Self