Brownsville, Texas 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

661
FXUS64 KBRO 251132 AAA
AFDBRO

Area Forecast Discussion...UPDATED
National Weather Service Brownsville TX
532 AM CST Thu Dec 25 2025

...New AVIATION...

.KEY MESSAGES...
Updated at 530 AM CST Thu Dec 25 2025

* Areas of dense fog is expected late tonight into Thursday
  morning. Visibilities will fall to 1 mile or less, especially
  around daybreak.

* A cold front Sunday night will lead to cooler temperatures for the
  first half of next week.

* Our next rain chance arrives Sunday night lingering into Monday
  with the passage of a cold front.

&&

.DISCUSSION...
Issued at 1030 PM CST Wed Dec 24 2025

High pressure will continue to dominate, maintaining unseasonably
warm temperatures into the weekend. A pattern shift is expected
Sunday/Monday with a cold front, bringing a chance of rain, elevated
winds, and cooler temperatures to close out the year.

Another round of fog will develop overnight, reducing visibility
to two miles or less. Localized dense fog can reduce visibility to
a quarter mile or less. Travelers should be prepared for locally
hazardous driving conditions - a red-nosed reindeer may come in
handy for guidance. Fog will mix out mid-morning as winds
increase with surface heating. A Special Weather Statement has
been issued for fog 2 miles or less through 9 AM CST.

Despite an unseasonably warm Christmas Day with high temperatures 10-
15 degF above average, it is unlikely high temperatures will break
any standing records. Friday is the closest one of our climate
stations will get to nearing or breaking a record - McAllen (MFE),
with a 4% chance of reaching 89degF, which would tie the record set
last year. Highs in the 80s and lows in the 60s will continue
through Sunday.

A strong cold front pushing through the region late Sunday into
Monday will bring much cooler temperatures, breezy northerly winds,
and a low to medium (30-60%) chance of rain. Current guidance
suggests a brief period of Wind Advisory-level winds along the
immediate coast Monday. Fire weather conditions Monday may be a
concern with elevated winds and dry air behind the front. High and
low temperatures at or below normal are expected from Monday through
the remainder of the forecast period. There is a non-zero chance of
low temperatures reaching or dipping below freezing in the northern
Ranchlands mid-week, but uncertainty is high this far out. We will
continue to monitor trends and refine the forecast in the coming
days to better highlight potential hazards.

&&

.AVIATION...
(12Z TAFS)
Issued at 530 AM CST Thu Dec 25 2025

LIFR is occurring at the aerodromes right now courtesy of dense
fog, and should reoccur again tonight as dense fog redevelops.
For the daylight hours, VFR will be in effect with light winds
and partly cloudy skies.

&&

.MARINE...
Issued at 1030 PM CST Wed Dec 24 2025

Favorable conditions will persist through this weekend, with
southerly to onshore winds and slight seas. Sunday night, a cold
front will result in strong to near gale force winds with gusts to
gale possible, building seas to moderate. Accompanying the front
Sunday night through Monday is a moderate chance (40 to 60 percent)
of rain. Small Craft Advisories are likely Monday into Tuesday, with
Gale Watch/Warnings possible as guidance continues to trend wind
speeds upwards.

&&

.PRELIMINARY POINT TEMPS/POPS...
BROWNSVILLE             84  68  84  69 /  10   0   0   0
HARLINGEN               84  65  86  65 /  10   0   0   0
MCALLEN                 87  68  88  69 /   0   0   0   0
RIO GRANDE CITY         87  65  88  67 /   0   0   0   0
SOUTH PADRE ISLAND      76  70  77  70 /  10   0   0   0
BAYVIEW/PORT ISABEL     81  66  82  67 /  10   0   0   0

&&

.BRO WATCHES/WARNINGS/ADVISORIES...
TX...Dense Fog Advisory until 9 AM CST this morning for TXZ249>255-
     353.

GM...None.
&&

$$