Arlington, Virginia 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

924
FXUS61 KLWX 270033
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
733 PM EST Fri Dec 26 2025

.SYNOPSIS...
High pressure will push eastward across Quebec while low
pressure dives toward the Virginia coast later tonight. High
pressure will briefly gain control Saturday before a strong
frontal system moves through late Sunday into Monday. A clipper-
type system follows in the wake while tracking through the area
by mid-week.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
Showery precipitation in the form of light freezing rain and
sleet continues in the I-70 corridor as of early evening.
Temperatures are gradually warming, with areas along and west of
the Alleghenies jumping well above freezing, and areas south of
I-70 creeping above freezing as well.

For the rest of tonight, the main area of forcing begins to
pull away toward the New Jersey coast. However, models continue
to highlight some residual areas of light drizzle or freezing
drizzle over northeastern Maryland. If this were to materialize,
slick travel may persist as temperatures stay fairly close to
the freezing mark. Otherwise, much of the night remains overcast
although some areas of clearing may occur over the central
Virginia piedmont down to around I-64. Low temperatures fall
into the 30s with spotty upper 20s across northeastern Maryland.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH SUNDAY NIGHT/...
Moisture overrunning the boundary off to the south will keep
clouds around through at least Saturday morning. This system
eventually begins to pull out from the Atlantic coast through
through the day. Heights build aloft as a longwave ridge
approaches from the Mississippi River Valley. Although this act
of rising heights should warm the atmosphere, only central
Virginia back across the central Shenandoah Valley into the
Potomac Highlands will see this mild air mass. Such spots are
forecast to reach the 50s, while elsewhere 40s will be more
commonplace. Even some areas in the mid 30s are possible across
northeastern Maryland given thick low clouds and northeasterly
winds. North to northeasterly winds will dominate today as high
pressure re-builds across southern Quebec. The entire region is
forecast to see clouds thicken overnight ahead of the next
trough arriving late in the weekend. Low temperatures will
generally range from the upper 20s to mid 30s.

By Sunday, the mentioned longwave ridge is expected to reach the
Eastern Seaboard. Heights will lower late in the day as the
leading edge of the next trough tracks toward the Ohio/Tennessee
Valleys. Rainfall gradually overspreads the region by Sunday
evening/night. While most can expect around a tenth of an inch
of rainfall, localized amounts up to a quarter inch are possible
along the Alleghenies. Amidst southerly winds, temperatures
should push into the low 50s across the central Virginia
Piedmont, Shenandoah Valley, and western Maryland. Some near 60
degree readings are possible across the Allegheny mountain
valleys, while 40s are commonplace elsewhere. Rain continues
into the night with widespread low temperatures in the 40s.

&&

.LONG TERM /MONDAY THROUGH FRIDAY/...
Blocky pattern with -NAO slows down UL trough & accompanying sfc
front to start the week. Local area will reside in warm sector to
start the long term on Monday with continued rain showers. Cold
front will move through during the day. Winds will increase amidst
CAA and tight pressure gradient. Latest wind probabilities show wind
advisories likely over the higher terrain of the Alleghenies and
Blue Ridge, with High Wind Warning criteria possible. Across the
climo wind advisory area (generally west of Blue Ridge / along and
north of I-66). Across the Alleghenies, this will result in wind
chills in the negative teens to lower single digits which could
prompt Cold Weather Advisories. Further east, a blustery night is in
store with widespread wind chills in the teens to low 20s. Still
uncertainties wrt moisture behind the front and exact wind
direction, but potential for accumulating snow exists in the
Alleghenies.

Most of the second half of next week looks mainly dry. Another front
may slide through mid week, perhaps aiding in a few snow showers
over the mountains if enough moisture is to be had. Otherwise,
December will end just as it started - colder than normal.

&&

.AVIATION /00Z SATURDAY THROUGH WEDNESDAY/...
Patchy light drizzle is possible overnight. Ceilings lower
across all TAF sites, except KCHO, with MVFR ceilings expected
tonight. Initial southerly winds will give way to northerly
winds at night as the frontal system drifts off the coast.

For Saturday, north to northeasterly winds persist with MVFR
ceilings sticking around for most. Any breaks in the clouds will
not occur until late, although KCHO should continue under VFR
conditions. Winds turn light on Saturday night before the next
weather maker approaches from the west on Sunday. This yields an
increasing southerly wind for Sunday with showers arriving later
in the day. Southerly gusts increase to around 20 knots for
Sunday evening into the night ahead of the cold front.
Restrictions are possible as rain showers push across the area.

Sub-VFR conditions linger into Monday with remnant rain showers.
CIGs also likely reduced. Gusty W/NW winds and a return to VFR are
expected late Monday into Tuesday. Gusts could exceed 30 to 40 knots
during this time, especially across northern terminals.

&&

.MARINE...
Southerly winds with occasional gusts to around 15 knots are
expected through the night.

A ramp up in marine wind fields take place on Saturday morning
as northerlies ensue behind the cold front. Northern channeling
effects are likely to impact portions of the Chesapeake Bay. As
such, Small Craft Advisories have been issued for the southern
half of the bay waters through early Saturday evening. Winds
drop off into Saturday night and much of Sunday. However,
southerly flow begins to intensify Sunday evening and into the
night ahead of a stronger cold front. Small Craft Advisories
will likely be required.

S winds channeling ahead of a cold front Monday likely results in
SCA caliber gusts, especially across wide waters of the bay. Cold
front will move through Monday switching winds to NW`ly behind the
front in CAA. Gale force winds are becoming increasingly likely
Monday into early Tuesday.

&&

.TIDES/COASTAL FLOODING...
Some locations may reach action stage tonight as low pressure
moves off the coast. Annapolis will come closest to minor flood.
After a brief dip in northerly winds Saturday, tides will
rebound in southerly flow Sunday into early Monday. Annapolis
may near the minor flood threshold again.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...Winter Weather Advisory until 3 AM EST Saturday for MDZ008-507-
     508.
     Winter Weather Advisory until 11 PM EST this evening for
     MDZ003-502.
     Winter Weather Advisory until midnight EST tonight for
     MDZ004>006-505.
     Ice Storm Warning until 1 AM EST Saturday for MDZ501-510.
VA...None.
WV...Winter Weather Advisory until 11 PM EST this evening for
     WVZ050>052-503-504.
MARINE...Small Craft Advisory from 8 AM to 3 PM EST Saturday for ANZ532-
     540-542.
     Small Craft Advisory from 6 AM to 6 PM EST Saturday for ANZ533-
     534-541-543.

&&

$$

SYNOPSIS...BRO/DHOF
NEAR TERM...BRO/DHOF
SHORT TERM...BRO/DHOF
LONG TERM...CPB
AVIATION...BRO/DHOF/CPB
MARINE...BRO/DHOF/CPB
TIDES/COASTAL FLOODING...LWX