Clayton, Delaware 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

802
FXUS61 KPHI 251033
AFDPHI

Area Forecast Discussion
National Weather Service Mount Holly NJ
633 AM EDT Wed Mar 25 2026

.WHAT HAS CHANGED...
A Small Craft Advisory is now in effect for Thursday and
Thursday night for the coastal Atlantic ocean waters.

&&

.KEY MESSAGES...
1. High pressure off the Northeast coast is in control until
departing tonight. Low pressure then drags a cold front through
the area Thursday night through Friday. Below normal
temperatures spread into the region for this weekend.

&&

.DISCUSSION...
KEY MESSAGE 1...High pressure off the Northeast coast is in
control until departing tonight. Low pressure then drags a cold
front through the area Thursday night through Friday. Below
normal temperatures spread into the region for this weekend.

High pressure off the Northeast and Mid-Atlantic coasts will
continue to drift out to sea later today and tonight. Return
flow sets up behind the departing high, and temperatures will
begin to creep up to near normal levels today, then above normal
temperatures on Thursday. Although turning warmer, skies will
be cloudy under increasing high clouds. Highs will be in the mid
and upper 50s today, and then in the upper 60s to low 70s on
Thursday.

A low pressure system will track northeastward out of the
Northern Plains and Great Lakes vicinity through southern
portions of Ontario and Quebec Thursday night, with a trailing
cold front moving through the region into Friday morning. Ahead
of this cold front, rain showers will move into northwestern
portions of the area by Thursday evening and track southeastward
across the area through Friday morning. All showers should
clear the region Friday afternoon. Model guidance does depict
some modest elevated instability, so a rumble of thunder or two
will be possible. Total rainfall amounts will generally range
from 0.25-0.5". A breezy southwest wind is expected on Thursday,
shifting to northwesterly on Friday. Gusts generally 25- 35 mph
are likely.

Once the cold front exits the region, cold air advection
through the day Friday will cause falling temperatures through
the day. This will be followed by cooler conditions for this
weekend. Highs will only be in the 40s on Saturday before
warming back up closer to normal on Sunday. High pressure in the
wake of the cold front should keep conditions dry through the
weekend.

&&

.AVIATION /12Z WEDNESDAY THROUGH SUNDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

Today...VFR. Increasing high clouds. S winds 5 kt or less this
morning, increasing to 8 to 12 kt late this morning and with
ocnl gusts up to 20 kt this afternoon. High confidence.

Tonight...VFR. S winds 5 to 10 kt.

Thursday...VFR. SW winds 10 to 15 kt with gusts up to 20 kt.

Outlook...

Thursday night into Friday...Sub-VFR likely in RA and low CIGs.
Improving conditions Friday afternoon and evening.

Saturday through Sunday...VFR. No significant weather.

&&

.MARINE...
Sub-Small Craft Advisory conditions today through Thursday
morning, then SCA conditions develop Thursday afternoon. S winds
5 to 10 kt today, becoming SW 10 to 15 kt with gusts up to 20
kt tonight through Thursday morning. On Thursday afternoon, SW
winds increase to 15 to 25 kt with gusts up to 30 kt, mostly on
the ocean waters. Delaware Bay may stay below SCA conditions.
Seas 2 to 3 ft today through Thursday morning, then increasing
to 3 to 5 ft.

Outlook...

Thursday night through Friday night...SCA conditions Thursday
night through Friday. VSBY restrictions in rain and fog Thursday
night through early Friday night.

Saturday through Sunday...Sub-SCA conditions with fair weather.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...Small Craft Advisory from 8 AM Thursday to 8 AM EDT Friday for
     ANZ450>455.

&&

$$

DISCUSSION...Cooper/MPS
AVIATION...Cooper/MPS
MARINE...Cooper/MPS