Brownsville, Texas 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

688
FXUS64 KBRO 310037 AAA
AFDBRO

Area Forecast Discussion...UPDATED
National Weather Service Brownsville TX
737 PM CDT Sun Mar 30 2025

...New AVIATION...

.SHORT TERM...
(Tonight through Monday night)
Issued at 234 PM CDT Sun Mar 30 2025

Rain-free, unseasonably warm, and humid conditions can be
anticipated across Deep South Texas and the Rio Grande Valley
through the short term period or through Monday night. Heat Risk
will remain mostly minor across the region with pockets of
moderate Heat Risk. Daytime high temperatures on Monday are
progged to be slightly warmer than today with values in the upper
80s near the coast to the low to mid 90s further inland. Overnight
lows tonight and Monday night will be in the upper 60s to lower
70s.

Low stratus, mist, and fog will be the primary weather concern
for tonight and possibly Monday night due to light winds, some
radiational cooling, and copious amounts of residual low level
moisture left behind from the recent historic rain storm event.

&&

.LONG TERM...
(Tuesday through next Sunday)
Issued at 234 PM CDT Sun Mar 30 2025

Loaded the NBM without significant adjustment. The upper level
pattern will be largely zonal the first part of the long term,
until deep H5 troughing develops over much of the western U.S.
around next Wednesday to Thursday, with potentially destabilizing
southwest flow aloft, if not in function then in form. Deep South
Texas/RGV weather conditions will thus tend to be warm and dry,
with little to no chance of rain.

A frontal boundary will develop north of the CWA Thursday night
into Friday as part of the larger scale flow, with moisture inflow
from the Gulf helping to eke out a few Sierra Madre Oriental
based showers. However, confidence is low (<10%) for any rain
until a portion of the upstream tough breaks off and heads east
over north Texas, bringing a front to the coast Saturday night
into Sunday. Unsettled weather will develop Saturday evening,
likely over the Ranchlands, but spreading over the entire CWA
from midnight Sunday to mid Sunday morning. Rain amounts should
not be of biblical Noah`s Ark proportions, but rather on the order
of tenths of an inch for the 18 to 24 hour window for rain.

High temperatures will be mainly in the 90s with a few century
marks out west on Wednesday. High temps will be depressed in the
70s to near 80 next Sunday due to cloudy and showery weather. Low
temps will be in the lower 70s, but post frontal lows Monday
morning will be in the 50s.

&&

.AVIATION...
(00Z TAFS)
Issued at 726 PM CDT Sun Mar 30 2025

Mostly clear skies and light to moderate southeast winds prevail
across Deep South Texas early this evening. Some low clouds with
MVFR ceilings were observed near the coast. MVFR to IFR conditions
are expected to develop later this evening into the overnight as
low clouds and patchy fog develop. VFR conditions are expected to
return late Monday morning into the afternoon.

&&

.MARINE...
Issued at 234 PM CDT Sun Mar 30 2025

Tonight through Monday Night...Light to moderate winds and low to
moderate seas are expected through Monday night. Rip current risk
will remain high through tonight before decreasing to moderate on
Monday.

Tuesday through Friday night...Tuesday southeast winds will
become moderate to fresh on the Gulf through Friday night. Choppy
Bay waters and elevated seas will develop. Small craft will need
to exercise caution, with a good (40-60%) chance that low end
small craft advisory conditions will develop and linger through
Friday night.

&&

.PRELIMINARY POINT TEMPS/POPS...
BROWNSVILLE             72  87  72  86 /   0   0   0   0
HARLINGEN               69  89  70  90 /   0   0   0   0
MCALLEN                 73  94  74  94 /   0   0   0   0
RIO GRANDE CITY         69  95  72  95 /   0   0   0   0
SOUTH PADRE ISLAND      71  78  71  79 /   0   0   0   0
BAYVIEW/PORT ISABEL     70  84  70  85 /   0   0   0   0

&&

.BRO WATCHES/WARNINGS/ADVISORIES...
TX...High Rip Current Risk until 7 AM CDT Monday for TXZ451-454-455.

GM...None.
&&

$$

SHORT TERM...23-Evbuoma
LONG TERM....54-BHM
AVIATION...63-KC