Claymont, Delaware 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

326
FXUS61 KPHI 261902
AFDPHI

Area Forecast Discussion
National Weather Service Mount Holly NJ
302 PM EDT Tue May 26 2026

.WHAT HAS CHANGED...
No significant changes.

&&

.KEY MESSAGES...
1. Breaks of sun and clouds this afternoon will give way to
unsettled weather tonight through Wednesday.

2. Drier and more seasonable conditions return for the end of
the week into the weekend.

&&

.DISCUSSION...
KEY MESSAGE 1...Breaks of sun and clouds this afternoon will
give way to unsettled weather tonight through Wednesday.

A mostly dry and partly sunny afternoon will continue with mild
temperatures.

The stationary front will set up over Delmarva for tonight and
tomorrow, with a wave of low pressure moving along it. This will
result in a few more rounds of showers for the Tuesday Night
and Wednesday period, mainly for areas south of I-78. A cold
front will sweep in on Wednesday from the northwest, which will
put an end to the unsettled pattern. Rainfall amounts around a
half inch or more are expected south of Philadelphia with
anywhere from a few hundredths to a quarter of an inch expected
north of the Philadelphia metro. Latest high res guidance
suggests at least modest instability, favorable low level lapse
rates, and around 20-30 kts of shear will be in place to
support at least some strong to marginally severe thunderstorms
across the Delmarva. Locally damaging wind gusts are possible in
the strongest storms. Temperatures Wednesday should be similar
to today, hovering around 80.

Once the cold front comes through on Wednesday Night, a
transition to more tranquil and nicer weather is expected.

KEY MESSAGE 2...Drier and more seasonable conditions return for
the end of the week into the weekend.

Behind the cold front from Wednesday, we trend slightly cooler for
Thursday which continues into the weekend. High temperatures for
most locations will be in the 70s during this timeframe and lows
generally in the 50s. A high pressure system is forecast to
gradually build into the region Thursday and remain in place into
the weekend. A low pressure system is also forecast to move into
New England Friday into Saturday, but model guidance trends
continue to show the high pressure system having more of an
influence across our area. Due to this high pressure system in
control, it looks to be a drier end of the week, continuing
into the weekend.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

Rest of today...Prevailing VFR. Winds variable around 5 kts or
less. High confidence.

Tonight...VFR conditions drop to MVFR between 05z-09z and then
down to IFR or even LIFR with fog and stratus developing with
rain moving through late in the night. Isolated thunderstorms
possible, warranting the addition of VCTS for terminals PHL and
south/east. Have added a period of LIFR conditions at KACY/KMIV
around 10z-11z due to low CIGs and potentially low VSBY. Winds
out of the south/southwest 5 kt or less. Low confidence.

Wednesday...MVFR/IFR conditions expected with scattered showers
and possibly a thunderstorm and low clouds. Low confidence.

Outlook...

Thursday through Sunday...VFR. No significant weather.

&&

.MARINE...
Sub- SCA conditions expected through Wednesday night. Seas of 2
to 4 feet.

Outlook...

Wednesday Night...Conditions are expected to be below Small
Craft Advisory criteria. Some showers with a few thunderstorms
are expected Wednesday evening.

Thursday through Sunday...Mainly sub-SCA conditions expected though
seas may briefly approach 5 feet Saturday night. Fair weather.

Rip Currents...

For today, winds will shift to the east-southeast and will be
light, around 5 to 10 MPH. Wave heights continue to lower as
well. A medium period swell will continue. Given less energy in
the surf zone with lower wave heights and very light winds
through today, have elected for a LOW risk for the development
of rip currents for today.

On Wednesday, winds turn more offshore with breaking waves only
around 1 to 2 feet. A medium period 7 second well will persist.
With offshore winds and low wave heights, a LOW risk for the
development of dangerous rip currents is in place.

Ocean temperatures are mainly in the 50s to low 60s. These cold
water temperatures can quickly cause hypothermia and physical
incapacitation to anyone suddenly immersed in the water.

For specific beach forecasts, visit weather.gov/beach/phi

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...None.

&&

$$

DISCUSSION...Guzzo/Hoeflich/MJL
AVIATION...AKL/MJL
MARINE...AKL/MJL