TTCM () > WeatherMonday, May 25, 2020
Washington DC Climate ReportDCwxWeatherSunrise: 5:48; Solar Noon: 1:05; Sunset: 8:22

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Last 72 Hours: ObservationsCurrently: 68°F  — USNO Clear Sky Chart

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Memorial Day: Cloudy, then gradually becoming mostly sunny, with a high near 76°. Calm wind becoming east around 5 mph in the afternoon.

Tonight: Partly cloudy, with a low around 59°. Southeast wind 3 to 6 mph.

Tuesday: Mostly sunny, with a high near 80°. Southeast wind 3 to 6 mph.

Tuesday Night: Partly cloudy, with a low around 62°. Southeast wind 5 to 7 mph becoming calm after midnight.

Wednesday: A slight chance of showers after 9am. Mostly cloudy, with a high near 80°. Light southeast wind. Chance of precipitation is 20%.

Wednesday Night: A chance of showers, mainly after 9pm. Mostly cloudy, with a low around 68°. Chance of precipitation is 40%.

Thursday: Showers likely, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 80°. Chance of precipitation is 60%.

Thursday Night: Showers likely and possibly a thunderstorm before 9pm, then a chance of showers. Mostly cloudy, with a low around 70°. Chance of precipitation is 60%.

Friday: Showers likely, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 86°. Chance of precipitation is 70%.

Friday Night: Showers and thunderstorms likely before 1am, then a chance of showers. Mostly cloudy, with a low around 68°. Chance of precipitation is 70%.

Saturday: A chance of showers. Partly sunny, with a high near 81°. Chance of precipitation is 40%.

Saturday Night: A chance of showers. Mostly cloudy, with a low around 60°. Chance of precipitation is 40%.

Sunday: Mostly sunny, with a high near 77°.

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000
FXUS61 KLWX 250131
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
931 PM EDT Sun May 24 2020

.SYNOPSIS...
High pressure centered off the New England coast will remain
wedged over the area through Memorial Day. The high will shift
southward toward midweek before shifting further eastward into
the Atlantic late in the work week. A cold front is expected
Friday, but could be preceded by some tropical moisture Wed and
Thu.

&&

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...

Clouds will hold in place overnight and lower. While it will
remain dry, patchy fog is expected, mainly west of I-95. Will
need to monitor fog development, as it potentially could be
thicker and more widespread. At this point have visibility
dropping to about 2 miles in the Shenandoah Valley and western
counties, but not making it far enough east to impact the
DC/Balt corridor.

&&

.SHORT TERM /6 AM MONDAY MORNING THROUGH TUESDAY NIGHT/...
Low level flow remains easterly through Monday morning before
taking on a more southeasterly component. Pesky clouds will hang
around through early afternoon before starting to loosen their
grip, becoming more broken to scattered in nature with peaks of
sun possible. As mid to upper ridging builds aloft on Monday
with the surface high to our east northeast, moderating
temperatures are expected with highs in the mid to upper 70s
area wide. The ridging aloft should act to suppress much in the
way of any shower and thunderstorm activity, but with less cloud
cover and a bit more instability once again, will carry low end
chance POPs along the Alleghenies should terrain circulations
help overcome this.

Dry conditions expected to persist Monday night through Tuesday
night as the high over the Atlantic shifts further southward and
winds locally turn out of the south. A continued moderation in
temperatures is also expected, with more sunshine during the
day on Tuesday. Highs on Tuesday will rise into the upper 70s to
lower 80s with a slight increase in humidity. Lows both
Monday/Tuesday night will be mild in the lower 60s.

&&

.LONG TERM /WEDNESDAY THROUGH SUNDAY/...
A cold front pushes in from the Midwest Friday, and with
increasing warmth and humidity, probabilities are good that it
will have decent instability to work with. Something to watch
for severe potential Fri. In advance of that though, some model
members of GFS and Euro ensembles show tropical moisture now
over Florida heading into the Mid Atlantic in the Wed/Thu
timeframe. Not a lock for heavy rain with many members not
showing that, but something to watch for heavy rain potential.

&&

.AVIATION /01Z MONDAY THROUGH FRIDAY/...
CIGs will drop back once again overnight to IFR status as a
light and moist easterly flow persists over the terminals.
MVFR/IFR CIGs continue through the first half of Memorial Day
before gradually improving Monday afternoon. Low clouds possible
once again Monday night but confidence in IFR CIGs again is
low. High pressure to the east will promote dry conditions over
the terminals on Tuesday as a light southerly flow and VFR
prevails.

Showers and thunderstorm chances return Wed into Friday. Brief
flight restrictions possible near storms.

&&

.MARINE...
Easterly breezes will remain below SCA thresholds tonight
through Memorial Day as high pressure to our northeast
continues to wedge itself over the region. Fair weather expected
to continue Monday night through Tuesday night as winds remain
light out of the south.

Overall wind field should remain under thresholds during the
midweek, but a brief wind gust possible near pop-up
showers/thunderstorms.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...None.

&&

$$
SYNOPSIS...CS
NEAR TERM...CS
SHORT TERM...BKF
LONG TERM...CS
AVIATION...BKF/HTS/CAS
MARINE...BKF/HTS

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