Drexel Hill, Pennsylvania 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

028
FXUS61 KPHI 290543
AFDPHI

Area Forecast Discussion
National Weather Service Mount Holly NJ
143 AM EDT Mon Jun 29 2026

.WHAT HAS CHANGED...
New Key Message 1.

Aviation section updated for 06Z TAFs and outlook.

Additional temperature record information added to the Climate
section.

&&

.KEY MESSAGES...
1. A warming trend in temperatures expected through Tuesday. A
few thunderstorms possible on Tuesday.

2. A large area of high pressure will set up over the Midwest,
resulting in high heat and humidity over the Northeast and Mid-
Atlantic. High temperatures will be well in the upper 90s to as
high as 105 degrees with maximum heat index values between 100
and 110 degrees from Wednesday through Saturday.

3. There is the potential for afternoon and evening
thunderstorms starting on Friday and lasting into the holiday
weekend.

&&

.DISCUSSION...
KEY MESSAGE 1...A warming trend in temperatures expected
through Tuesday. A few thunderstorms possible on Tuesday.

A strengthening ridge of high pressure to our west will result
in a warming trend in temperatures today through Tuesday. Highs
will be in the mid to upper 80s today, and closer to 90 degrees
for some areas by Tuesday. With a lack of low level moisture
return locally until late Tuesday, dewpoints are anticipated to
mix out each afternoon. So although it`ll be quite warm,
humidity won`t be too oppressive until the heat ramps up on
Wednesday. Lows in the 60s.

By Tuesday afternoon and evening, we could get some MCSs coming
into our region out of the Great Lakes region amid the
northwesterly flow aloft. Greatest chances of any thunderstorms
will be focused mainly north of the Philly metro. Details on
this activity remains to be seen, but will be something to
monitor. It is possible convection remains mainly north of our
area. Damaging winds would be the main threat with any
thunderstorms.


KEY MESSAGE 2...A large area of high pressure will set up over
the Midwest, resulting in high heat and humidity over the
Northeast and Mid-Atlantic. High temperatures will be well in
the upper 90s to as high as 105 degrees with maximum heat index
values between 100 and 110 degrees from Wednesday through
Saturday.

Strong mid-level ridging develops over the Great Lakes and Ohio
Valley early this week. The high then builds into the Northeast
and Mid-Atlantic by Wednesday and continues through into the
holiday weekend. In general, a west to southwest flow develops
on Wednesday, then becomes more west to northwest by Friday.
High temperatures will climb into the mid and upper 90s on
Wednesday, and then from 100 to 105 on Thursday and Friday.
Temperatures will abate somewhat on Saturday, returning to the
mid and upper 90s. However, with dew points in the 60s and 70s,
this will yield max heat index values from 105 to 110 during the
two hottest days, which will be Thursday and Friday. Still, max
heat index values will be 100 to 105 on Wednesday and Saturday.

The Extreme Heat Watch remains in effect for New Jersey,
southeast Pennsylvania, the Delaware Valley including
Philadelphia and northern Delaware, and the southern Poconos.
Future shifts will likely expand the Watch to include the rest
of Delmarva.

The mid-level ridge will break and retrograde back towards the
south and west on Saturday, and a mid-level trough will try to
slide down into the Northeast. This pattern change will begin to
favor slightly cooler temperatures and a break in the extreme
heat by Sunday or Monday, as well as the potential for showers
and thunderstorms next weekend (see Key Message 3 below).


KEY MESSAGE 3...There is the potential for afternoon and
evening thunderstorms starting on Friday and lasting into the
holiday weekend.

The mid-level ridge looks to break down and retrograde back to
the south and west starting on Friday, and this will allow mid-
level troughiness to develop over the Northeast. With several
shortwaves riding over the top of the ridge and into the local
area, this may touch off afternoon and evening showers and
thunderstorms starting on Friday, but the better chances for
convection arrive on Saturday and Sunday. Currently, PoPs are
around 20 percent (slight chance) on Friday and 30 to 50 percent
(chance) on Saturday and Sunday. Given the high heat and
humidity, cannot rule out at least a few stronger thunderstorms.

&&

.AVIATION /06Z MONDAY THROUGH FRIDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

Through 12Z...Restrictions are anticipated to develop for many
terminals in fog/mist and low clouds moving in off the ocean.
Winds mainly calm. Low confidence forecast in the details of
restrictions.

Rest of Today...Any restrictions clearing early (by 13Z), then
VFR. ENE winds increasing to near 5-10 kts from I-95 and
southeast, then shifting SE to S as sea, bay, and river breezes
develop. Winds light and variable for RDG/ABE, eventually
settling out of the south near 5 kts. High confidence.

Tonight...Low chance of restrictions in fog overnight.
Otherwise, VFR. Winds mainly calm. Low confidence in fog.

Outlook...

Tuesday through Friday...VFR. Low chance (20%) of a thunderstorm
Tuesday and Friday, otherwise no significant weather.

&&

.MARINE...
Good conditions across the waters with sub-SCA continuing into
the overnight. A couple scattered showers are possible across
Delaware Bay or the southern NJ and Delaware waters, but the
chances are rather low. Winds will remain light 5 to 10 knots
from the E or SE. Similar conditions for Monday. Aside from the
showers a little fog is possible overnight and into early
Monday.

Outlook...

Monday night through Friday...Overall, sub-SCA conditions
expected. Cannot rule out a brief period of southerly 25+ kt
gusts or seas approaching 5 feet late Tuesday and/or Wednesday
afternoon, mainly north of Barnegat Light.

Rip Currents...

For Monday, breaking waves in the surf zone will be around 2
feet or less with east to northeast winds around 10 mph and a
southeast swell. As a result, there is a LOW risk of dangerous
rip currents for both the Jersey Shore and Delaware Beaches.

For Tuesday, conditions remain similar, with east to southeast
winds around 10-15 mph and a southeast swell. Breaking waves in
the surf zone will be around 1-2 feet as a result, and
therefore, the LOW risk of dangerous rip currents for both the
Jersey Shore and Delaware Beaches looks to continue.

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

&&

.CLIMATE...
Record breaking heat is forecast from Wednesday through
Saturday. Temperature records for our climate sites are listed
below:

All Time Record High Temperatures

Site                  Record / Date
Allentown (ABE)          105 / July 3, 1966
AC Airport (ACY)         106 / June 28, 1969
AC Marina (55N)          104 / August 7, 1918
Georgetown (GED)         104 / July 22 & 23, 2011
Mount Pocono (MPO)       103 / July 3, 1911
Philadelphia (PHL)       106 / August 7, 1918
Reading (RDG)            106 / July 22, 2011
Trenton (TTN)            106 / July 9, 1936 & July 22, 2011
Wilmington (ILG)         107 / August 7, 1918

All Time Record Warmest Low Temperatures

Site                  Record / Date
Allentown (ABE)           79 / July 15, 1995
AC Airport (ACY)          84 / July 23, 2011
AC Marina (55N)           82 / July 21, 2019
Georgetown (GED)          84 / July 23, 2011
Mount Pocono (MPO)        76 / July 12, 1952
Philadelphia (PHL)        83 / July 24, 2010 & July 23, 2011
Reading (RDG)             81 / August 7, 1918
Trenton (TTN)             84 / August 11, 1895
Wilmington (ILG)          84 / August 7, 1918

Record Number of Consecutive 100+ Degree Days

Site                  Record / Date
Allentown (ABE)       3 days / July 9-11, 1936 & July 2-4, 1966
AC Airport (ACY)      3 days / July 2-4, 1966 & July 22-24, 2011
AC Marina (55N)        1 day / Occurred multiple times
Georgetown (GED)      2 days / Most recent June 24-25, 2025
Mount Pocono (MPO)     1 day / July 3, 1911
Philadelphia (PHL)    3 days / July 2-4, 1966 & July 8-10, 1993
Reading (RDG)         3 days / Most recent July 21-23, 2011
Trenton (TTN)         3 days / Most recent July 21-23, 2011
Wilmington (ILG)      3 days / Most recent July 9-11, 1936

Record High Temperatures
                          July 1
Site                  Record / Year
Allentown (ABE)           98 / 2018
AC Airport (ACY)          99 / 1968
AC Marina (55N)           98 / 1968
Georgetown (GED)          99 / 2012
Mount Pocono (MPO)        88 / 1963, 1964, 1968, & 2018
Philadelphia (PHL)       102 / 1901
Reading (RDG)            101 / 1901
Trenton (TTN)             98 / 1898, 1901, & 1945
Wilmington (ILG)          97 / 1931 & 1963

Record Warmest Low Temperatures
                          July 1
Site                  Record / Year
Allentown (ABE)           74 / 1930
AC Airport (ACY)          77 / 1945
AC Marina (55N)           79 / 1945
Georgetown (GED)          76 / 1945
Mount Pocono (MPO)        67 / 1946, 1971, 2013, 2017, 2025
Philadelphia (PHL)        82 / 1901
Reading (RDG)             76 / 1968
Trenton (TTN)             77 / 1945
Wilmington (ILG)          75 / 2013

Record High Temperatures
                          July 2
Site                  Record / Year
Allentown (ABE)          102 / 1966
AC Airport (ACY)         100 / 1966
AC Marina (55N)           97 / 1968
Georgetown (GED)          99 / 1953
Mount Pocono (MPO)        93 / 1911
Philadelphia (PHL)       103 / 1901
Reading (RDG)            102 / 1966
Trenton (TTN)            100 / 1901
Wilmington (ILG)          98 / 1941 & 1966

Record Warmest Low Temperatures
                          July 2
Site                  Record / Year
Allentown (ABE)           75 / 2013
AC Airport (ACY)          79 / 2002
AC Marina (55N)           76 / 2012
Georgetown (GED)          77 / 1959
Mount Pocono (MPO)        70 / 1903
Philadelphia (PHL)        82 / 1901
Reading (RDG)             79 / 1901
Trenton (TTN)             79 / 1901
Wilmington (ILG)          75 / 1941 & 2014

Record High Temperatures
                          July 3
Site                  Record / Year
Allentown (ABE)          105 / 1966
AC Airport (ACY)         104 / 1966
AC Marina (55N)           99 / 1919
Georgetown (GED)         101 / 1954
Mount Pocono (MPO)       103 / 1911
Philadelphia (PHL)       104 / 1966
Reading (RDG)            103 / 1898 & 1966
Trenton (TTN)            102 / 1966
Wilmington (ILG)         102 / 1966

Record Warmest Low Temperatures
                          July 3
Site                  Record / Year
Allentown (ABE)           75 / 2018
AC Airport (ACY)          78 / 2018
AC Marina (55N)           76 / 1983, 2002, & 2018
Georgetown (GED)          79 / 1953
Mount Pocono (MPO)        69 / 2013
Philadelphia (PHL)        77 / 1876, 1901, &2002
Reading (RDG)             76 / 2018
Trenton (TTN)             76 / 1901 & 1966
Wilmington (ILG)          76 / 2002

Record High Temperatures
                          July 4
Site                  Record / Year
Allentown (ABE)          102 / 1949
AC Airport (ACY)         102 / 1966
AC Marina (55N)           99 / 1966
Georgetown (GED)         100 / 1966
Mount Pocono (MPO)        99 / 1911
Philadelphia (PHL)       103 / 1966
Reading (RDG)            100 / 1911 & 1966
Trenton (TTN)             99 / 1919, 1999, & 2010
Wilmington (ILG)         102 / 1966

Record Warmest Low Temperatures
                          July 4
Site                  Record / Year
Allentown (ABE)           75 / 1999
AC Airport (ACY)          75 / 1974, 1983, 1999, & 2002
AC Marina (55N)           79 / 2002
Georgetown (GED)          75 / 1999 & 2012
Mount Pocono (MPO)        70 / 2002 & 2013
Philadelphia (PHL)        79 / 1919
Reading (RDG)             78 / 1966
Trenton (TTN)             78 / 1966
Wilmington (ILG)          76 / 1999

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Extreme Heat Watch from Wednesday afternoon through Saturday
     evening for PAZ054-055-060>062-070-071-101>106.
NJ...Extreme Heat Watch from Wednesday afternoon through Saturday
     evening for NJZ001-007>010-012>027.
DE...Extreme Heat Watch from Wednesday afternoon through Saturday
     evening for DEZ001.
MD...None.
MARINE...None.

&&

$$

DISCUSSION...Fitzsimmons/MPS/OHara
AVIATION...MPS/Staarmann
MARINE...AKL/MPS/OHara