Arlington, Virginia 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

910
FXUS61 KLWX 240833
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
333 AM EST Sat Jan 24 2026

.WHAT HAS CHANGED...
Snow amounts have been increased an additional 1 to 3 inches in
many locations between Cumberland, Maryland and Winchester,
Virginia, and Reisterstown, Maryland. Ice amounts have been
decreased a couple hundredths of an inch along the I-95
corridor, particularly to the southwest of Baltimore, Maryland
to Washington D.C. and suburbs. Winter Storm Warnings remain in
effect for all areas starting Saturday evening and continuing
through early Monday morning.

&&

.KEY MESSAGES...
- 1) Major winter storm will impact the region late Saturday
through Sunday evening.

- 2) Frigid temperatures this weekend and into much of next week.

- 3) Light accumulating snow possible on Thursday.

&&

.DISCUSSION...
KEY MESSAGE 1...Major winter storm will impact the region late
Saturday through Sunday evening.

As of 1am Saturday, apparent temperatures are in the single
digits above zero along U.S. 29 and to the south and east.
Apparent temperatures are in the single digits below zero to the
north and west of U.S. 29. The mountains currently have apparent
temperatures in the teens to 20s below zero. Expect temperatures
and dewpoint temperatures to continue to fall the remainder of
the night. Cold Weather Advisories remain in effect for the
entire region continuing through Saturday morning. This is
really setting the stage for the impending winter storm, set to
arrive Saturday evening.

No major adjustments to the QPF forecast this afternoon, as
things are pretty much the same in that department as we saw
with last night`s model guidance. A broad 1.5-2.5" of QPF is
expected across the region (more in the SE, less in the NW).
Snow to liquid ratios look to start around 15-18:1 with this
system for the entirety of the area, while then trending down
toward 7-10:1 Sunday morning into the afternoon (lower where
some mixing occurs). A pending dry slot could also play into
amounts as well. Snow should be fluffy in nature, particularly
within the initial warm advection conveyor belt Saturday night.
Expect some crustiness of this snowpack given any mixing that
may occur as the system kicks out heading into Sunday night.

In terms of precipitation type, the winter storm will make all
areas all snow for the first couple of hours, at least, starting
early Saturday evening and spreading northeastward through the
night. We introduce sleet mixing with snow across the central
Shenandoah Valley and Virginia Piedmont between 3am and 6am
Saturday night/early Sunday morning. This mix will spread
northward to where all areas, except for western and west-
central Maryland, and the high country in eastern West Virginia,
experience a mix of snow and sleet between 6am and 9am. It is
during this particular window early Sunday morning when freezing
rain gets introduced to the central Shenandoah Valley and
Virginia Piedmont. The freezing rain threat also spreads north
to reach I-66, VA 7, and the I-95 corridor by Sunday afternoon.

As you can see, this major winter storm will have high impacts
with the snow, sleet, freezing rain, and frigid temperatures
that it brings to our region. We will be looking at several
inches of snow widespread, then a couple of inches of sleet on
top of the snow, and finally a thin sheet or light to modest
accumulation of ice. The frigid temperatures throughout the
weekend and all of next week will ensure that this wintry mess
will not be going anywhere anytime soon. On days, where we have
some sunshine, expect a quick refreeze especially after sunset.

Upslope snow will linger along and west of the Allegheny Front
into Monday morning, as will the potential for some light snow
or freezing drizzle near and east of I-95.

When all is said and done, the most likely area for the highest
snowfall totals is across northern MD and over VA near and west
of the Blue Ridge. Chances for a foot of snow remain quite high
along/west of the Blue Ridge up to northern MD. Further south
and east, mixing may ultimately put a lid on just how high
snowfall totals get, though lift through the DGZ and therefore
snowfall rates prior to any mixing look impressive.

The combination of heavy snow and ice alongside prolonged very
cold temperatures presents a unique and significant risk to life
and property across virtually the entire region.

Monitor the latest forecasts at weather.gov/lwx/winter for
updates on this situation. Now is the time to make preparations
for the storm. This includes getting any necessary groceries or
medicines that you may not be able to access this weekend into
early next week due to any potential closure. Have an emergency
kit in the car including extra batteries, a flashlight, and
blanket just in case you get stranded. Make sure to refuel or
charge your car before the storm hits. Check on elderly friends,
family, and neighbors and don`t forget about pets or livestock
during this prolonged cold period.


KEY MESSAGE 2...Frigid temperatures this weekend and into much of
next week.

Arctic high pressure builds over the forecast area from the
north behind this weekend`s storm system. Looking aloft, a
potent upper level trough deepens over the east coast nest week,
bringing an arctic air mass and frigid temperatures to the
region. Temperatures will stay below freezing with highs in the
teens to 20s each day. Overnight lows in the single digits with
the exception being Sunday night where low temperatures are in
the teens to low 20s.

In addition to the frigid temperatures, gusty winds next week will
result in dangerously cold wind chills each night. Cold Weather
Advisories are possible each night Monday through Thursday as wind
chills drop to near or below zero. Winds gust 15 to 20 knots Monday
and Thursday night, with wind chills approaching Extreme Cold
Warning
criteria. In the Alleghenies, wind chills as low as -20 to -30 are
possible. Further east, wind chills between -10 and -20 are possible
with the I-95 corridor having wind chills between 0 and -10.
Temperatures are not expected to go above freezing throughout the
forecast period.


KEY MESSAGE 3...Light accumulating snow possible on Thursday.

A quick moving clipper system is likely to cross the region by the
end of the week. While there continues to be a lot of uncertainty
regarding the track and timing, the GFS, Euro, and Canadian all have
QPF on Thursday. Given an arctic air mass and very cold
temperatures, precipitation type will be snow. If this threat
materializes, a light snow is possible.

&&

.AVIATION /06Z SATURDAY THROUGH WEDNESDAY/...
VFR conditions through today. Gusty winds will diminish
early this morning as a winter storm approaches from the
southwest. Sub-VFR conditions return from the southwest this
afternoon before spreading northeast this evening into tonight.
The main window for heavy snow accumulation will be between
00z/7pm Saturday through 18z/1pm Sunday with some mixed precip
possible Sunday morning into Sunday afternoon especially at
terminals south/east of DCA. Precip should largely end by or
shortly after 06Z/1am Monday. Plan for travel delays and
cancellations that may linger into the first half of next week.

After a lengthy period of restrictions, the winter storm will
gradually pull away from the coast early Monday. Some residual low
ceilings are possible on Monday morning, particularly across the
eastern terminals. Winds behind the system will be northwesterly
with gusts up to 20 to 30 knots.

Winds remain elevated overnight, gusting 15 to 20 knots before
diminishing throughout the day on Tuesday.

&&

.MARINE...
Northwest winds will diminish into early this morning. Until
then, a Low Water Advisory remains in effect through 10am this
morning.

Gusty winds and freezing spray likely linger through the weekend
as a major winter storm tracks across the region.

Northeast winds on Sunday shift to northwest on Monday with SCA
criteria winds possible both days. Winds will be greatest on Monday,
gusting near Gale conditions across the open waters of the
Chesapeake Bay. Freezing spray remains likely Sunday and Monday.
Gale Watches may be needed in future shifts for Monday.

Additional SCA`s may be needed on Tuesday as winds near criteria
in the southern portions of the waters.

&&

.TIDES/COASTAL FLOODING...
Blowout tides are expected through the first half of next week.
Water levels are expected to bottom out at 1 to 2 ft below MLLW
this morning and may extend through Monday as NW winds strengthen.
A gradual return to normal water levels is expected by the
middle of next week.

&&

.CLIMATE...
Here are some daily temperature records during the January 24-27,
2026 timeframe:

A `+` sign indicates multiple years currently hold that record.
A `!` sign indicates the record is forecast to be tied or broken.

                   ***SATURDAY, JANUARY 24TH, 2026***
LOCATION                   RECORD COLD HIGH (YEAR)  RECORD LOW (YEAR)
Washington-National (DCA)        18F (1948)             3F (1963)
Washington-Dulles (IAD)          21F (2014)!           -2F (1987)
Baltimore (BWI)                  17F (1948)             1F (1963)

Baltimore Inner Harbor (DMH)     21F (2014)+            4F (1963)
Martinsburg (MRB)                13F (1948)            -4F (1963)+
Charlottesville (CHO)            23F (2014)+!           5F (1963)
Annapolis (NAK)                  18F (1948)             2F (1963)
Hagerstown (HGR)                 12F (1936)            -5F (1963)+

                  ***SUNDAY, JANUARY 25TH, 2026***
LOCATION                   RECORD COLD HIGH (YEAR)  RECORD LOW (YEAR)
Washington-National (DCA)        16F (1897)             3F (1935)
Washington-Dulles (IAD)          18F (1987)            -5F (1987)
Baltimore (BWI)                  17F (1987)+            0F (1897)
Baltimore Inner Harbor (DMH)     20F (2004)+            8F (1961)
Martinsburg (MRB)                16F (2004)+           -4F (1936)

Charlottesville (CHO)            19F (2004)+            5F (1948)
Annapolis (NAK)                  19F (1961)             3F (1987)
Hagerstown (HGR)                 15F (2004)           -15F (1935)

                 ***MONDAY, JANUARY 26TH, 2026***
LOCATION                   RECORD COLD HIGH (YEAR)  RECORD LOW (YEAR)
Washington-National (DCA)        17F (1961)             5F (1948)+
Washington-Dulles (IAD)          21F (1966)             3F (1987)
Baltimore (BWI)                  17F (1961)             2F (1961)
Baltimore Inner Harbor (DMH)     19F (1961)            13F (1982)!
Martinsburg (MRB)                12F (1961)           -10F (1948)
Charlottesville (CHO)            13F (1961)             9F (1922)!
Annapolis (NAK)                  18F (1961)             5F (1905)
Hagerstown (HGR)                 15F (1961)           -12F (1948)

                 ***TUESDAY, JANUARY 27TH, 2026***
LOCATION                   RECORD COLD HIGH (YEAR)  RECORD LOW (YEAR)
Washington-National (DCA)        22F (1961)             6F (1935)!
Washington-Dulles (IAD)          22F (2003)            -9F (1987)
Baltimore (BWI)                  21F (1918)!            3F (1987)!
Baltimore Inner Harbor (DMH)     22F (1961)!           13F (1982)!
Martinsburg (MRB)                17F (1971)            -6F (1987)

Charlottesville (CHO)            18F (1961)             0F (1982)
Annapolis (NAK)                  22F (1961)             5F (1927)
Hagerstown (HGR)                 17F (1907)!          -10F (1987)

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...Cold Weather Advisory until 10 AM EST this morning for DCZ001.
     Winter Storm Warning from 11 PM this evening to 4 AM EST
     Monday for DCZ001.
MD...Cold Weather Advisory until 10 AM EST this morning for
     MDZ003>006-008-011-013-014-016>018-501>510.
     Gale Warning until 6 AM EST early this morning for MDZ008.
     Freezing Spray Advisory until 6 AM EST early this morning for
     MDZ008.
     Low Water Advisory until 10 AM EST this morning for MDZ008.
     Winter Storm Warning from 11 PM this evening to 4 AM EST
     Monday for MDZ003>006-008-011-013-014-016>018-502>508.
     Winter Storm Warning from 7 PM this evening to 10 AM EST
     Monday for MDZ501-509-510.
VA...Cold Weather Advisory until 10 AM EST this morning for
     VAZ025>031-036>040-050-051-053>057-501>508-526-527.
     Winter Storm Warning from 11 PM this evening to 4 AM EST
     Monday for VAZ028-030-031-040-050-051-053>057-501-502-505-
     506-526-527.
     Winter Storm Warning from 7 PM this evening to 10 AM EST
     Monday for VAZ503.
     Winter Storm Warning from 7 PM this evening to 1 AM EST Monday
     for VAZ025>027-029-036>039-504-507-508.
WV...Cold Weather Advisory until 10 AM EST this morning for
     WVZ050>053-055-501>506.
     Winter Storm Warning from 11 PM this evening to 4 AM EST
     Monday for WVZ050>053-504.
     Winter Storm Warning from 7 PM this evening to 10 AM EST
     Monday for WVZ501-503-505.
     Winter Storm Warning from 7 PM this evening to 1 AM EST Monday
     for WVZ055-502-506.
MARINE...Cold Weather Advisory until 10 AM EST this morning for ANZ530.
     Gale Warning until 6 AM EST early this morning for ANZ530>543.
     Freezing Spray Advisory until 6 AM EST early this morning for
     ANZ530>532-535-536-538>540.
     Low Water Advisory until 10 AM EST this morning for ANZ530>532-
     538>540.
     Winter Storm Warning from 11 PM this evening to 4 AM EST
     Monday for ANZ530.
     Freezing Spray Advisory until 1 PM EST this afternoon for
     ANZ533-534-537-541>543.
     Small Craft Advisory until 10 AM EST this morning for ANZ533-
     534-537-541>543.

&&

$$

DISCUSSION...AVS/KLW/CJL/CPB
AVIATION...AVS/KLW/CJL/CPB
MARINE...AVS/KLW/CJL/CPB