Arlington, Virginia 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

323
FXUS61 KLWX 020827
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
327 AM EST Fri Jan 2 2026

.SYNOPSIS...
High pressure briefly returns to the area today. Low pressure
approaches from the south Saturday, bringing the potential for
wintry precipitation to portions of the area. High pressure returns
Sunday before another system approaches early next week.

&&

.NEAR TERM /THROUGH TONIGHT/...
A departing upper trough continues to produce light wintry mix
(mostly freezing drizzle) in the Alleghenies early this morning.
This is expected to quickly wane after sunrise. The ongoing Winter
Weather Advisory will be continued through late morning. Beyond
that, dry conditions are expected for the rest of the area / rest of
the day as weak high pressure passes overhead then moves offshore. A
period of sunshine peaks through the clouds this afternoon, but
expect skies to fill in again this evening into tonight. Highs today
range from mid 30s along I-70 to mid to upper 40s in central VA.
Cold and dry tonight, with lows in the upper teens to 20s.

&&

.SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/...
A southern stream wave of low pressure moving across the Carolinas
on Saturday could bring some light wintry precip to parts of the
area. The system won`t really phase with a northern stream system
coming in from the Great Lakes until both are well offshore. Weak
high pressure over southern Quebec will keep marginally cold air in
place, but mostly over the northern half of the area, while most of
the QPF will be over the southern half where temps are mostly above
freezing. As a result, most of the guidance is pointing toward a
light rain/snow mix south of I-66/US-48 Saturday afternoon, becoming
a mostly light snow east of US-15 after sunset. Little to no snow
accumulation is forecast at this time, though will continue to
monitor in case there is any northern trend in the guidance over the
next 24-36 hours. If any wintry precip sticks, some travel
disruptions are possible late Saturday afternoon into Saturday
night, especially on elevated and untreated surfaces.

A weak cold front moves through the area early Sunday that brings
dry and gusty conditions to end the weekend. Cooler highs on Sunday
in the 30s to low 40s, with a mix of sun and clouds.

&&

.LONG TERM /MONDAY THROUGH THURSDAY/...
High pressure will progress offshore on Monday as upper troughing
tracks well out to sea. Cool temperatures and light winds are
expected. Temperatures are forecast to climb into the mid 30s to mid
40s beneath mostly cloudy skies.

As we move toward the middle of the week, the flow pattern across
the CONUS will become more zonal and progressive in nature. This
will allow for more of a Pacific airmass to overspread the CONUS,
leading to warmer temperatures and lots of cloud cover.

A quick moving disturbance will pass to our north through the Great
Lakes Tuesday into Tuesday night. While some showers appear possible
in the Alleghenies, not much is expected to spread east of the
mountains. Forecast uncertainty begins to increase by Wednesday into
Thursday, but the vast majority of ensemble solutions favor
continued dry conditions. Mostly cloudy skies are expected, along
with warmer temperatures. Highs are forecast to make it into the 50s
by Wednesday and Thursday, and could even near 60 if warmer
solutions were to verify.

&&

.AVIATION /08Z FRIDAY THROUGH TUESDAY/...
Overall it looks as though VFR conditions are going to prevail
through the weekend. High cloud cover will continue to pass across
the region, though some lower clouds below 5KFT are possible today.
An area of low pressure passing south of the region Saturday could
bring light snow to IAD/DCA, and possibly to CHO/BWI/MTN during the
evening hours. No accumulating snow is forecast at this time.

VFR conditions and southerly winds are expected on both Monday and
Tuesday.

&&

.MARINE...
Favorable marine conditions are expected today and for most of the
weekend, though there will be a couple of times to watch for
possible elevated winds. The first is tonight as high pressure moves
offshore, with northerly winds increasing slightly to 10-15 knots
tonight. Then, another period of elevated winds looks possible
Sunday afternoon as northerly channeling increases behind a cold
frontal passage.

Sub-SCA level southerly winds are expected over the waters on both
Monday and Tuesday.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...Winter Weather Advisory until 11 AM EST this morning for
     MDZ509.
VA...None.
WV...Winter Weather Advisory until 11 AM EST this morning for
     WVZ501-505.
MARINE...None.

&&

$$

SYNOPSIS...KRR
NEAR TERM...KRR
SHORT TERM...KRR
LONG TERM...KJP
AVIATION...KRR/KJP
MARINE...KRR/KJP