Brownsville, Texas 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

534
FXUS64 KBRO 231723
AFDBRO

Area Forecast Discussion
National Weather Service Brownsville TX
1123 AM CST Tue Dec 23 2025

...New DISCUSSION, AVIATION, MARINE...

.KEY MESSAGES...
Updated at 1115 AM CST Tue Dec 23 2025

* Patchy to areas of dense fog possible late tonight into
  Wednesday morning.

* After today, dry conditions will continue through much of the
  weekend with rain chances returning early next week.

* More seasonable temperatures expected next week in wake of a
  cold front Sunday night.

&&

.DISCUSSION...
Issued at 1115 AM CST Tue Dec 23 2025

Low rain chances (20-30%) will continue today due to onshore flow
elevated moisture and some weak lifting. Dry conditions return later
tonight with high pressure aloft and sfc high pressure building over
the Gulf into eastern Texas. This will also help to maintain well
above normal temperatures through Sunday with highs in the mid to
upper 80s and lows in the 60s.

A cold front will move through the CWA on Sunday night bringing with
it returning chances for rain Sunday evening into Monday (40-60%).
The front will also bring more seasonable temperatures. Monday and
Tuesday highs will be in the 60s, and overnight lows will fall into
the the 40s and 50s by Monday night.

Fog will once again be possible overnight tonight into Christmas
Eve, and again on Christmas morning. Patchy to areas of dense fog
will cause low visibilities, less than a mile at times, so use
caution if driving.

&&

.AVIATION...
(18Z TAFS)
Issued at 1115 AM CST Tue Dec 23 2025

VFR conditions will prevail through this evening at all sites,
though may still see some brief MVFR over the next hour or so. Later
tonight, ceilings will begin to fall with MVFR ceilings falling
IFR/LIFR for HRL and MFE just before sunrise. BRO could see some
brief IFR conditions as well as patchy fog develops across the
region. VFR will return by mid day.

&&

.MARINE...
Issued at 1115 AM CST Tue Dec 23 2025

Generally favorable marine conditions will prevail through
this weekend. Chances of showers and an isolated thunderstorm
continue into this evening which could lead to locally enhanced
winds and seas. Wave heights of 3 of 4 feet with 5 to 8 second
periods are expected through the weekend. Hazardous marine
conditions will return on Monday in wake a cold front Sunday
night.

&&

.PRELIMINARY POINT TEMPS/POPS...
BROWNSVILLE             83  67  83  66 /  20   0  10   0
HARLINGEN               84  64  84  63 /  20   0  10   0
MCALLEN                 87  68  86  67 /  30  10   0   0
RIO GRANDE CITY         87  65  86  66 /  20  10   0   0
SOUTH PADRE ISLAND      77  70  76  69 /  10   0  10   0
BAYVIEW/PORT ISABEL     81  65  80  64 /  20   0  10   0

&&

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

$$

SHORT TERM...68
LONG TERM....68
AVIATION...68