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Selbyville, Delaware 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Selbyville DE
National Weather Service Forecast for: Selbyville DE
Issued by: National Weather Service Philadelphia, PA
Updated: 4:11 pm EDT Aug 17, 2025
 
Tonight

Tonight: A slight chance of showers and thunderstorms between 10pm and 2am.  Partly cloudy, with a low around 70. South wind around 5 mph becoming calm  after midnight.  Chance of precipitation is 20%.
Slight Chance
T-storms

Monday

Monday: A chance of showers and thunderstorms, mainly between 2pm and 3pm.  Increasing clouds, with a high near 80. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Partly Sunny
then Chance
Showers
Monday
Night
Monday Night: A chance of showers, mainly before 2am.  Mostly cloudy, with a low around 68. East wind 10 to 15 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers

Tuesday

Tuesday: A slight chance of showers.  Partly sunny, with a high near 77. East wind around 15 mph.  Chance of precipitation is 20%.
Slight Chance
Showers

Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 68. East wind 5 to 10 mph.
Partly Cloudy

Wednesday

Wednesday: A slight chance of showers after 2pm.  Mostly sunny, with a high near 81. Chance of precipitation is 20%.
Mostly Sunny
then Slight
Chance
Showers
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 68.
Partly Cloudy

Thursday

Thursday: Mostly sunny, with a high near 80. Breezy.
Mostly Sunny
and Breezy

Thursday
Night
Thursday Night: Mostly clear, with a low around 63.
Mostly Clear

Lo 70 °F Hi 80 °F Lo 68 °F Hi 77 °F Lo 68 °F Hi 81 °F Lo 68 °F Hi 80 °F Lo 63 °F

 

Tonight
 
A slight chance of showers and thunderstorms between 10pm and 2am. Partly cloudy, with a low around 70. South wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.
Monday
 
A chance of showers and thunderstorms, mainly between 2pm and 3pm. Increasing clouds, with a high near 80. Northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
 
A chance of showers, mainly before 2am. Mostly cloudy, with a low around 68. East wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
A slight chance of showers. Partly sunny, with a high near 77. East wind around 15 mph. Chance of precipitation is 20%.
Tuesday Night
 
Partly cloudy, with a low around 68. East wind 5 to 10 mph.
Wednesday
 
A slight chance of showers after 2pm. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
Wednesday Night
 
Partly cloudy, with a low around 68.
Thursday
 
Mostly sunny, with a high near 80. Breezy.
Thursday Night
 
Mostly clear, with a low around 63.
Friday
 
Sunny, with a high near 81.
Friday Night
 
Mostly clear, with a low around 65.
Saturday
 
Mostly sunny, with a high near 82.
Saturday Night
 
Partly cloudy, with a low around 68.
Sunday
 
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Selbyville DE.

Weather Forecast Discussion
075
FXUS61 KPHI 180031
AFDPHI

Area Forecast Discussion
National Weather Service Mount Holly NJ
831 PM EDT Sun Aug 17 2025

.SYNOPSIS...
A cold front will pass through the region tonight, becoming
stationary over southern Virginia on Monday. High pressure
builds in from the north through the middle to end of next week
as Hurricane Erin passes by well offshore.

&&

.NEAR TERM /THROUGH MONDAY/...
As of 7:15pm...Scattered convection is ongoing across much of
the area this evening. Several outflow boundaries from earlier
storms are found over much of the area, which continue to spark
up some additional showers and storms. A more organized area of
convection is moving in from the west over extreme southern PA
and Maryland which is expected to move into southern NJ and the
Delmarva over the next few hours. Behind this, the cold front
will be advancing in from the north, shunting any residual
shower and storm activity to the south of our area.

Convection should come to an end by midnight as the frontal
boundary moves from north to south across the area. This will
cause winds to shift from SW to N/NE after midnight with a low
stratus deck likely setting up. Lows by Monday morning look to
range from around 60 north to around 70 near the urban corridor,
most of Delmarva, and coastal areas.

Monday looks to be sharply cooler compared to Sunday as
northeast flow and low status persist in the wake of the cold
front. The cold front will stall across southern Virginia and
since it will remain in our proximity, there may be some
lingering spotty showers around. Otherwise, the big story will
the cooler temperatures and lower dew points. In fact, much of
the area looks to see highs not getting out of the 70s under
mostly cloudy skies. It`ll also be quite windy where winds may
gust occasionally up to 20-30 mph before tapering off later in
the day.

&&

.SHORT TERM /MONDAY NIGHT THROUGH TUESDAY NIGHT/...
A cooler airmass will be moving into the region in the form of a
high pressure system. This will lead to onshore flow and a
continuation of the stark change in overnight lows and day time
highs with lows Monday night and Tuesday night expected in the
low to mid 60s and daytime highs Tuesday in the low to mid 70s.

A stalled frontal boundary lingering just south of the area
should lead to some isolated shower potential but not expecting
a washout by any means.

&&

.LONG TERM /WEDNESDAY THROUGH SUNDAY/...
The stalled frontal boundary will continue to linger nearby
Wednesday and as some shortwave energy moves in from the west,
this will bring another chance for showers and possibly a few
embedded thunderstorms. Temperatures will remain on the cool
side of climo.

The highest impacts in the extended will be from the TC Erin.
The current forecast keeps the storm offshore, however the
prolonged period of onshore flow and high period swells will
likely cause high surf, dangerous rip currents, the potential
for beach erosion, and coastal flooding through the week.

Please refer to the National Hurricane Center for more details
and stay tuned to the local forecast.

The end of the week should feature benign sensible weather
conditions as high pressure should bring fair and dry weather
and seasonable temperatures. More unsettled conditions may
return Sunday.

&&

.AVIATION /01Z MONDAY THROUGH FRIDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

Tonight...VFR conditions early, followed by MVFR conditions
later in night (generally after 08Z) as a low stratus cloud deck
moves into the region. Scattered showers and thunderstorms will
linger through about 03Z, before tapering off. Convection
remains widely scattered, so opted to only mention VCSH in TAFs
for now as confidence is not high enough. Southwest winds around
5-10 kt will gradually veer to northwest and eventually
northeast while increasing to 10-15 G 20 kt overnight. Moderate
confidence overall, but lower confidence with regards to timing.

Monday...MVFR ceilings are likely to prevail at all terminals
for much of the day as low stratus deck remains. Skies may begin
to scatter out late in the day near KRDG/KABE. A slight chance
of rain showers near KACY/KMIV, otherwise dry conditions.
East-northeast winds around 10-15 kt with gusts up to 20-25 kt
possible.

Outlook...

Monday Night through Wednesday...Mainly VFR with periods of
sub- VFR conditions possible from showers and thunderstorms.

Thursday and Friday...VFR.

&&

.MARINE...
Small Craft Advisories have been issued for all Atlantic Coastal
waters and now including the Delaware Bay. These advisories
begin as early as 2 AM Monday for northern waters and as late as
7 AM for southern waters.

South-southwest winds around 15-20 kt will persist through
midnight, before a cold front sweeps across the waters. This
front will cause winds to sharply become north-northeasterly
around 20-25 kt with gusts up to 30 kt through Monday. Seas
around 3-4 feet tonight will build to 4-8 feet on Monday.

Outlook...

Monday night through Friday...SCA conditions continue due to
the approach of what is currently Hurricane Erin. Elevated winds
and seas develop Tuesday and will last into at least Friday.
Seas 5-7 feet Tuesday build as high as 8-14 feet by Thursday.

Rip currents...

For Monday, northeasterly wind around 20 mph. Breaking wave
heights generally 2-3 feet. Increasing long period swells
propagating from Hurricane Erin are expected to begin arriving.
Given these factors, have maintained the HIGH risk for the
development of dangerous rip currents at all area beaches.

For Tuesday, east-northeasterly wind 10-15 mph. Breaking wave
heights 3-6 feet. Long period southeasterly swells (potentially
near 20 seconds) associated with Hurricane Erin will continue.
There is a HIGH risk for the development of dangerous rip
currents at all area beaches.

A Rip Current Risk Statement will be in effect both Monday and
Tuesday, and will likely need to be continued further into the
week.

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

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...High Risk for Rip Currents from 8 AM EDT Monday through Tuesday
     evening for NJZ014-024>026.
DE...High Risk for Rip Currents from 8 AM EDT Monday through Tuesday
     evening for DEZ004.
MD...None.
MARINE...Small Craft Advisory from 7 AM to 10 PM EDT Monday for ANZ430-
     431.
     Small Craft Advisory from 2 AM Monday to 6 AM EDT Friday for
     ANZ450-451.
     Small Craft Advisory from 4 AM Monday to 6 AM EDT Friday for
     ANZ452-453.
     Small Craft Advisory from 7 AM Monday to 6 AM EDT Friday for
     ANZ454-455.

&&

$$

SYNOPSIS...Franklin
NEAR TERM...DeSilva/Fitzsimmons/Franklin
SHORT TERM...MJL
LONG TERM...MJL
AVIATION...DeSilva/Franklin/MJL
MARINE...Cooper/DeSilva/Franklin/MJL
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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