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Arlington, Virginia 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Fort Myer VA
National Weather Service Forecast for: Fort Myer VA
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 2:22 am EDT Jun 18, 2026
 
Overnight

Overnight: Mostly cloudy, with a low around 71. South wind around 9 mph, with gusts as high as 20 mph.
Mostly Cloudy

Thursday

Thursday: A chance of showers and thunderstorms, mainly between 3pm and 5pm.  Partly sunny, with a high near 94. Breezy, with a south wind 16 to 22 mph, with gusts as high as 33 mph.  Chance of precipitation is 30%.
Breezy.
Partly Sunny
then Chance
T-storms
Thursday
Night
Thursday Night: A chance of showers, with thunderstorms also possible after 5am.  Increasing clouds, with a low around 70. West wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 30%.
Partly Cloudy
then Chance
Showers
Juneteenth

Juneteenth: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and noon.  Cloudy through mid morning, then gradual clearing, with a high near 84. Northwest wind 5 to 9 mph, with gusts as high as 18 mph.  Chance of precipitation is 30%.
Chance
Showers then
Sunny
Friday
Night
Friday Night: Mostly clear, with a low around 64. Northwest wind 6 to 9 mph.
Mostly Clear

Saturday

Saturday: Sunny, with a high near 85.
Sunny

Saturday
Night
Saturday Night: Mostly clear, with a low around 65.
Mostly Clear

Sunday

Sunday: Mostly sunny, with a high near 88.
Mostly Sunny

Sunday
Night
Sunday Night: A chance of showers and thunderstorms, mainly after 2am.  Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Slight Chance
T-storms then
Chance
Showers
Lo 71 °F Hi 94 °F Lo 70 °F Hi 84 °F Lo 64 °F Hi 85 °F Lo 65 °F Hi 88 °F Lo 71 °F

 

Overnight
 
Mostly cloudy, with a low around 71. South wind around 9 mph, with gusts as high as 20 mph.
Thursday
 
A chance of showers and thunderstorms, mainly between 3pm and 5pm. Partly sunny, with a high near 94. Breezy, with a south wind 16 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.
Thursday Night
 
A chance of showers, with thunderstorms also possible after 5am. Increasing clouds, with a low around 70. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Juneteenth
 
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and noon. Cloudy through mid morning, then gradual clearing, with a high near 84. Northwest wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Friday Night
 
Mostly clear, with a low around 64. Northwest wind 6 to 9 mph.
Saturday
 
Sunny, with a high near 85.
Saturday Night
 
Mostly clear, with a low around 65.
Sunday
 
Mostly sunny, with a high near 88.
Sunday Night
 
A chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Monday
 
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 87. Chance of precipitation is 80%.
Monday Night
 
Showers and thunderstorms. Low around 65. Chance of precipitation is 80%.
Tuesday
 
Mostly sunny, with a high near 84.
Tuesday Night
 
Mostly clear, with a low around 64.
Wednesday
 
Mostly sunny, with a high near 86.

 

Forecast from NOAA-NWS for Fort Myer VA.

Weather Forecast Discussion
572
FXUS61 KLWX 180653
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
253 AM EDT Thu Jun 18 2026

.WHAT HAS CHANGED...

...UPDATED discussion for late Sunday through the middle of
next week...

Weak energy in the mid-levels of the atmosphere has
spawned a few batches of showers across Maryland, northeastern
West Virginia and northern Virginia. No thunder with this
activity as it quickly moves to the east.

&&

.KEY MESSAGES...
- 1) Hotter conditions return today with potential for severe
  thunderstorms and strong gradient winds.

- 2) A strong low pressure system could bring the threat for
  heavy rainfall and thunderstorms late Sunday through Monday.

- 3) An active upper-level pattern could bring continued rain
  chances through mid-week.

&&

.DISCUSSION...
KEY MESSAGE 1...Hotter conditions return today with potential
for severe thunderstorms and strong gradient winds.

As ripples of energy in the mid-levels move east across our
northern zones early this morning, some rain showers will bring
some much needed rain to parts of the region through daybreak.
Most of these showers have occurred or are expected to occur
across the northern half of the Alleghenies, western and central
Maryland, northeastern West Virginia, and northwestern Virginia.

A cold front will drag across the region throughout the rest of
today through early Friday. Hotter temperatures than yesterday
expected this afternoon with highs in the middle 70s to middle
80s west of the Blue Ridge and highs in the lower to middle 90s
east of the Blue Ridge. Heat index values in the mid 90s to
perhaps near 100 expected. This heat, combined with effects
from increasing humidity and wind shear in all levels could
spawn some strong to severe thunderstorms across most of our
region. There is some uncertainty as to the area extent of such
strong to severe thunderstorms given the most recent nighttime
convection, cloud cover, and expected slightly cooler
temperatures in the aforementioned zones of our northwestern
third of our region. Otherwise, all other areas may be more
prone to such strong convection this afternoon into early
evening.

Timing of strong to severe thunderstorms seem more probable
late morning to mid-afternoon in the northwest and north-central
areas, while the afternoon hours seem more legitimate farther
east and southeast into the metros and northern half of
Virginia. The southeastern zones, including southern Maryland
would be more probable later this afternoon and early evening.
The main threats will be damaging wind gusts over 55 mph and
large hail. Lightning may also become a big factor with the
strongest thunderstorms. Not only will damaging winds be
anticipated in strong to severe thunderstorms, but also from a
synoptic or gradient viewpoint as well. Winds just above the
boundary layer are very strong due to a low-level jet. A Wind
Advisory remains in effect throughout the Alleghenies, interior
western zones, and the northern Blue Ridge.

The cold front will push southward Thursday night. The front
will absorb an area of low pressure to the south, likely
originating from Arthur. There is still some spread with how far
north additional rain reaches, but some rain chances will
linger across the southern half of the area in particular
through Friday morning. Skies should clear through the day with
lowering humidity and seasonable temperatures.


KEY MESSAGE 2...A strong low pressure system could bring the threat
for heavy rainfall and thunderstorms late Sunday through Monday.

After a mainly quiet weekend across the region, there is an
increasing signal of active weather returning late Sunday into
Monday. Looking aloft first, the key players are a compact upper low
dropping southeastward from the Great Lakes as well as an open wave
ejecting eastward from the Ohio Valley. The combination of these
features will fuel increasing lift across the Mid-Atlantic region.
While the accompanying surface low is more modest in nature compared
to the one today/Thursday, it still may feature a 1000-mb surface
pressure. Ensemble spread is notable as this low tracks across the
Ohio Valley toward the Mason-Dixon Line. Where this low tracks and
how quickly the warm sector crosses the local area will drive the
degree of instability in the atmosphere. One aspect of the forecast
that does appear a bit more certain is anomalous moisture tracking
up the Eastern Seaboard on Monday. The heavy rainfall signal is
certainly non-zero, but still bears watching as models continue to
resolve the more complex details.


KEY MESSAGE 3...An active upper-level pattern could bring continued
rain chances through mid-week.

As the early week system drives a cold front offshore early Tuesday,
there is a loose ensemble signal of additional unsettled conditions
through mid-week. Mid/upper heights begin to build across the Desert
Southwest into northwestern Mexico. At the same time, cyclonic flow
across south-central Canada begins to dig toward the Midwest and
northeastern U.S. Forcing from this trough could again increase
shower and thunderstorm chances across the region. At this point,
uncertainty is high across the board as shown by the low
probabilities for rainfall in the forecast. Temperatures appear
seasonable heading into mid-week with a gradual uptick in humidity
levels.

&&

.AVIATION /06Z THURSDAY THROUGH MONDAY/...
A southwest wind gradient increases this morning and could
exceed 30 knots at times. There is some uncertainty in
convection coverage given the overnight convection into early
this morning. This early convection could help to stabilize the
atmosphere most of the morning leading into the afternoon.
PROB30 groups have been used due to the combination of low
coverage and low confidence. MRB may largely miss out on the
potential for stronger storms, but the strongest could produce
severe gusts elsewhere. A second round of showers could affect
portions of the area tonight into Friday morning, but impacts
are uncertain. Skies should gradually clear Friday with gusty
northwest winds.

Gusty NW winds around 20-25 kts can be expected Saturday. While
VFR conditions are expected for much of Sunday, there is an
increasing signal of heavy rainfall and thunderstorms toward the
night and into Monday. Depending on how this plays out,
restrictions would become more likely. Initial winds on Sunday
begin out of the west-southwest before shifting over to
southeasterly by the evening/night. A return to westerlies is
expected for Monday with gusts increasing to around 15 to 20
knots.

&&

.MARINE...
Southwest winds are expected to increase through today. This
will provide an environment for Small Craft Advisories for
portions of the waters by late this afternoon and most waters
tonight. High end advisory conditions are likely today as
strong low pressure passes to the north. Gale Warnings are in
effect for the northern Chesapeake Bay. The strongest gusts
will be near the shore as air temperatures rise into the 90s.
Special Marine Warnings may be needed during the afternoon and
early evening as scattered strong to severe thunderstorms
potentially track over the waters.

There may be a bit of a break in the winds tonight as the front
slows down. Marginal Small Craft Advisories may be needed for
portions of the waters Friday in northwest flow.

Winds on Saturday will be out of the NW and near SCA criteria in the
wake of a secondary cold front. Winds will likely taper off
into Saturday evening as they gradually turn out of the south.
Sub-advisory level winds are expected for Sunday before hazardous
conditions return to the forecast on Monday. Increasing south to
southwesterly winds may lead to Small Craft Advisories across the
area waterways.

&&

.TIDES/COASTAL FLOODING...
An increasing southwesterly flow ahead of a cold front will
allow for anomalies to peak early this morning. Several
locations may experience minor tidal flooding this morning.
Advisories remain in effect for Annapolis and Havre de Grace,
where confidence is currently highest. Annapolis may even
approach moderate flood stage.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...Small Craft Advisory until 9 AM EDT this morning for MDZ008.
     Gale Warning from 9 AM this morning to 8 PM EDT this evening
     for MDZ008.
     Coastal Flood Advisory until 1 PM EDT this afternoon for
     MDZ014.
     Wind Advisory from 7 AM this morning to 6 PM EDT this evening
     for MDZ501-502-509-510.
     Coastal Flood Advisory from 10 AM this morning to 4 PM EDT
     this afternoon for MDZ508.
VA...Wind Advisory from 7 AM this morning to 6 PM EDT this evening
     for VAZ503-504-507.
WV...Wind Advisory from 7 AM this morning to 6 PM EDT this evening
     for WVZ050-055-501>506.
MARINE...Small Craft Advisory until 9 AM EDT this morning for ANZ530-
     531-535-538.
     Gale Warning from 9 AM this morning to 8 PM EDT this evening
     for ANZ530-531-535-538.
     Small Craft Advisory until 8 PM EDT this evening for
     ANZ532>534-536-537-539>543.

&&

$$

DISCUSSION...BRO/KLW
AVIATION...BRO/KLW
MARINE...BRO/KLW
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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