Houston, Texas 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

525
FXUS64 KHGX 131840
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1240 PM CST Tue Jan 13 2026

...New DISCUSSION, MARINE...

.KEY MESSAGES...

- Negative tide levels are anticipated in the bays this week, most
  significant late Wednesday-Thursday.

- Two dry cold fronts are forecast to push through the area: one
  on Wednesday and another Friday.

- Brief warm up on Sunday before a third possible cold front
  Monday night/Tuesday morning.

&&

.DISCUSSION...
Issued at 1213 PM CST Tue Jan 13 2026

A weak upper level low over central Texas this afternoon will
continue eastward tonight, merging with a broader trough digging
across much of the Central/Eastern Conus. We`ve already seen
widespread light showers across the region on radar, indicating that
PWs of 0.75-1.00 inches have been sufficient with the amount of lift
provided by the low. Shower coverage is expected to peak this
afternoon (right around now) as we get the full forcing from the
passing upper level low. Activity then tapers off from west to east
into overnight into Wednesday as the low exists the area. Anticipate
another cold evening with lows for Wednesday morning in the
40s/lower 50s.

Wednesday kicks off with the aforementioned upper level low, now
shortwave, east of the area, now embedded within the much stronger
mid/upper trough spanning the Central/Eastern CONUS. This larger
upper level feature is anticipated to push a weaker reinforcing
front through SE Texas on Wednesday. Winds may briefly shift W/WSW
early in the morning due to a prefrontal trough moving in from the
north. The reinforcing front should lag behind it, entering the
Brazos Valley during the late morning, then moving off the coast
during the late afternoon. PWs will be fairly low, generally under
0.75", thus showers will be extremely sparse if any form to begin
with. Breezy northerly winds and cooler temperatures should settle
in behind the front. Daytime highs may top out in the 60s/lower 70s,
but anticipate much cooler temps overnight with lows for Thursday
morning in the 30s/40s. A light freeze could occur in many spots
across the Piney Woods area near Crockett.

Thursday won`t be a particularly active day as we find ourself post-
cold front. Surface high pressure should pass over the region during
the daytime with breezy northerly winds early in the day becoming
light and variable, then later shifting southeasterly in the
evening. Daytime highs will be fairly cool as onshore flow is
(tentatively) set to occur after peak heating, with highs topping
out in the 50s. After onshore flow is resumes, we`ll see moisture
slowly return overnight, which should help limit the full extent of
cooling overnight. Lows for Friday morning will should be slightly
warmer, though still in the 30s/40s across much of the area with
some lower 50s along the coast.

Friday should see another mid/upper level trough dig through the
Northern Mississippi River Valley/Great Lakes. This trough should
send another cold front towards SE Texas, which should push into the
Brazos Valley during the late afternoon and later off the coast some
time around midnight. PWs by this point are forecasted to be around
0.5" or less. Rain chances will be very low with this frontal
passage too, but there is still a chance that some light showers
could develop along the coast as moisture pools. Highs during the
daytime should top out in the 60s/lower 70s. Breezy and cooler air
filters in overnight into the early morning hours with lows for
Saturday morning ranging from the 30s/40s to possibly lower 50s at
the coast. Could see lows touch the freezing mark across the
northern edge of our CWA.

Saturday on the whole should feature benign, post-frontal weather as
high pressure fills in over the region, causing winds to relax and
shift northeasterly. Highs should reach the 50s/60s during the
daytime. Clear skies aloft from high pressure and with northerly
flow still in place, we should see some of the coolest temperatures
overnight into Sunday morning with lows in the 30s/lower 40s inland
and mid/upper 40s along the coast.

Sunday will see surface high pressure move off to the east into the
Lower Mississippi River Valley, allowing onshore flow to return
during the afternoon. This will usher in WAA and bring gradually
warming temperatures and increasing moisture into next week. Highs
for Sunday should reach the upper 50s/60s during the daytime.
Overnight temperatures will be slightly warmer, but still cool with
lowers for Monday morning anticipated to bottom out in the upper
30s/lower 50s.

Forecast certainty decrease heading into next week, but signs
suggest that we`ll see at least one more afternoon of warmer weather
on Monday. Highs are anticipated to reach the the 60s/lower 70s
during the daytime, with some isolated showers/storm chances
possible during the daytime as PWs climb above 1.0 inch. Long range
models suggest that another mid/upper level trough may dig across
the Northern Plains/Great Lakes/Ohio Valley on Monday, sending
another cold front into SE Texas. Timing is still up in the air, but
anticipate the FROPA to occur some time Monday afternoon/evening or
early Tuesday Morning.

03

&&

.AVIATION...
(12Z TAF Issuance)
Issued at 516 AM CST Tue Jan 13 2026

VFR conditions will prevail with BKN to OVC mid and high level
clouds passing through the region. There will be a chance of
isolated, light showers developing during the afternoon hours
today. Winds today will be southwesterly around 5-8kt, become
variable overnight, and then return to southwesterly during the
morning on Wednesday. A cold front will be passing through the
region Wednesday afternoon ushering in a north-northwesterly wind
shift.

Fowler

&&

.MARINE...
Issued at 1213 PM CST Tue Jan 13 2026

Mariners should remain mindful of negative tide levels through the
week, especially around low tide cycles in the central and northern
half of the the bays. Another cold front will push off the coast
Wednesday afternoon, prompting Small Craft Advisories across all
bays and waters. Low Water Advisories may be needed overnight into
Thursday morning as water levels approach -1.0ft MLLW. High pressure
passes over the area Thursday, causing winds and seas to decrease
and shift southeasterly. Another cold front is slated to push off
the coast late Friday night/early Saturday morning, bringing
moderate northeasterly winds in it`s wake.

03

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)  44  67  36  58 /   0   0   0   0
Houston (IAH)  47  69  40  58 /   0   0   0   0
Galveston (GLS)  54  68  44  57 /  10   0   0   0

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...None.
GM...Small Craft Advisory from 6 PM Wednesday to 6 AM CST Thursday
     for GMZ330-335.

     Small Craft Advisory from noon Wednesday to 6 AM CST Thursday
     for GMZ350-355-370-375.

&&

$$

DISCUSSION...03
AVIATION...Fowler
MARINE...03