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Shaded-relief map of Henlopen Acres, Delaware: rivers, roads, the city limits and where the water drains.
DELAWARE · SUSSEX COUNTY

Henlopen Acres

158 people, 30 ft above sea level in Sussex County.

30 ftElevation, city center
158People, 2024 estimate
0 sq miLand area
Clear 46°
Clear now Dew point 33° · N 3 mph · high 43°
City of Henlopen Acres River Interstate 2 miles
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The Henlopen Acres plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Henlopen Acres

NWS forecast and National Blend of Models · updated 6:00 PM EST
RIGHT NOW Georgetown - Delaware Coastal Airport (KGED) · 6:54 PM
Clear
46° Clear Feels like 45° · high of 43° near 7 PM
WindN 3 mphno gusts
Humidity60%rising to 92% by morning
Pressure29.96 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 33° · Dryabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Clear
Not this weeknone in the forecast for a week
LIKELY AMOUNT—nothing expected
LAST RAINNov. 120.11 in · 2 dry days
ALERTS & OUTLOOKS
No watches or warnings for Sussex County
NWS Mount Holly and the Storm Prediction Center · checked 7:18 PM
SUN & MOON
↑ 6:41 AM4:48 PM ↓
10 h 6 m of daylight, 2 minutes less than yesterday
Waxing crescent, 27% lit. Next full moon: Nov. 24.
AIR & POLLEN
22
GOODAir quality index · ozone
No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
SATURDAY, NOV. 14
SUNDAY, NOV. 15
MONDAY, NOV. 16
TUESDAY, NOV. 17
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
4p
mostly cloudy night
partly cloudy night
mostly clear night
mostly clear night
mostly sunny
mostly sunny
partly cloudy day
partly cloudy night
mostly clear night
mostly clear night
mostly clear night
mostly clear night
mostly sunny
mostly sunny
partly cloudy day
partly cloudy night
mostly clear night
clear night
clear night
clear night
clear day
clear day
clear day
clear night
TEMPERATURE °F
43°
36°
55°
34°
54°
33°
CHANCE OF RAIN
50%
WIND, MPH
8
8
8
8
9
12
12
8
6
6
6
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9
8
5
2
1
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2
HOW IT FEELS · DEW POINT
Dry: dew points 29 to 37°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 59° / 40°
SAT Nov. 14 Partly cloudy Partly cloudy
43° 34°
0% rain — WNW 8 A
SUN Nov. 15 Mostly sunny; warmer Mostly sunny; warmer
55° 31°
0% rain — NNW 11 A
MON Nov. 16 Partly cloudy Partly cloudy
55° 31°
0% rain — NNW 8 A
TUE Nov. 17 Sunny Sunny
58° 30°
0% rain — W 5 A
WED Nov. 18 Partly cloudy Partly cloudy
61° 32°
0% rain — W 5 A
THU Nov. 19 Mostly sunny Mostly sunny
64° 34°
0% rain — SW 5 B
FRI Nov. 20 Mostly sunny Mostly sunny
64° 37°
0% rain — NW 5 B
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Henlopen Acres about 5,000 feet above the ground was over British Columbia three days ago, and over the Great Lakes a day ago, about 2,830 miles back along its path. It rose from near the ground on the way. Near the ground the air came from British Columbia; at 10,000 feet, from the Pacific north of Hawaii. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.

THIS WEEK IN 2009 Nov. 11–12, 2009

The wettest two days this week has seen

3.21 inches of rain fell in two days, the most for this week of the year since records began in 1945. The next wettest, 3.10 inches, fell in 2020.

3.10″
3.21″
20202009
Source: NOAA RCC-ACIS, the Lewes record since 1945.
MILE2
THE GROUND

What Henlopen Acres stands on

Henlopen Acres’s center stands about 30 ft above sea level. Within three miles the land runs from -10 ft to 70 ft, a difference of 80 ft: gently rolling country. Open water lies within three miles.

Under the town center the state geologic map shows Chesapeake Group (silt), from the Tertiary, 2.6 to 66 million years old.

Henlopen Acres, cut in half from west to east

A section west to east, 24 miles through the town center
0 ft100 ft HENLOPEN ACRES30 ftHigh point of the line100 ft ← WE →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.

Rock at the surface along the line

Chesapeake Group

Silt. Age: Tertiary, 2.6 to 66 million years old. About 13 mi of the line.

From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.

Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
MILE3
THE WATER

Where Henlopen Acres’s rain goes

Rain that falls on Henlopen Acres runs straight into the Atlantic Ocean.

FROM THE CENTER OF HENLOPEN ACRES < 2 mi to the Atlantic Ocean straight to the shore

Traced down the USGS NHDPlus V2.1 river network from the Census center point of Henlopen Acres; river miles along the main stem, rounded.

MILE5
THE ALMANAC

Henlopen Acres’s year

1991–2020 normals · records since 1945 · Lewes, 6 mi northwest

Henlopen Acres has a humid subtropical climate. Summer afternoons average 88° in July; winter nights fall to about 30° in January. A normal year brings about 10 inches of snow; with the rain, that comes to about 47 inches of water.

46°30°48°32°55°38°66°46°75°56°83°66°88°71°85°69°80°64°69°52°59°42°50°35° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1 TODAY 47.3 in rain and snowmelt
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average88° / 71°high / low, the warmest month
January, average46° / 30°high / low, the coldest month
Rain and melted snow47.3 inwettest months: July and September
Snow a year10.5 insnowiest: February
Hottest on record102°FJune 21, 1997
Coldest on record−11°FJanuary 17, 1982
Wettest day on record6.98 inAugust 14, 1953
Snowiest day on record15.0 inJanuary 26, 1987
Climate typeHumid subtropicalKöppen Cfa

AROUND THE RING

1Lows below freezingDec. 29 to Feb. 18; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Henlopen Acres normally reaches 59° and falls to 42°. The record high is 77°, in 1989; the record low 21°, in 2019. The most rain on this date, 1.68 in, fell in 1995.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high46°48°55°66°75°83°88°85°80°69°59°50°
Normal low30°32°38°46°56°66°71°69°64°52°42°35°
Rain and melt, in3.383.174.213.453.383.774.954.314.494.413.594.17
Snow, inches2.06.51.00.00.00.00.00.00.00.00.01.0
Record high78° (1950)86° (1997)89° (1998)92° (2009)97° (1997)102° (1997)101° (2011)101° (1997)98° (1983)92° (1954)88° (1950)77° (1998)
Record low−11° (1982)0° (1979)9° (1950)18° (1982)27° (1947)39° (1947)47° (1965)47° (1986)37° (1963)26° (1966)16° (1955)0° (1958)

Normals 1991–2020 and records since 1945 at Lewes, 6 miles northwest. NOAA, through RCC-ACIS.
MILE7
ON THE NETWORK

Around Henlopen Acres on the Forecast Network

Neighboring plates

Salisbury MD · 36 MI 36 miles southwest Dover DE · 38 MI 38 miles northwest Philadelphia PA · 89 MI 89 miles north Baltimore MD · 91 MI 91 miles northwest Washington DC · 105 MI 105 miles west New York NY · 147 MI 147 miles northeast
FORECASTCITY
Map of Henlopen Acres, Delaware. Explore the plate
DELAWARE · SUSSEX

Henlopen Acres

158 people, 30 ft above sea level in Sussex County.

30 ftElevation
158People
0 sq miLand
Clear 46°
ClearDew point 33°
1

Today in Henlopen Acres

NEXT 15 HOURS
Now mostly cloudy night 43° 1%
10p mostly clear night 40° 1%
1a mostly clear night 38° 1%
4a mostly clear night 37° 1%
7a mostly sunny 36° 1%
10a mostly sunny 51° 0%
Clear
NEXT RAINNone this week
→
Sat0%
Partly cloudy Partly cloudy
34
43
A
Sun0%
Mostly sunny; warmer Mostly sunny; warmer
31
55
A
Mon0%
Partly cloudy Partly cloudy
31
55
A
Tue0%
Sunny Sunny
30
58
A
Wed0%
Partly cloudy Partly cloudy
32
61
A
Thu0%
Mostly sunny Mostly sunny
34
64
B
Fri0%
Mostly sunny Mostly sunny
37
64
B
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK IN 2009 · NOV. 11–12, 2009

3.21 inches in two days, the most for this week since 1945.

2

What Henlopen Acres stands on

Henlopen Acres’s center stands about 30 ft above sea level. Within three miles the land runs from -10 ft to 70 ft, a difference of 80 ft: gently rolling country. Open water lies within three miles.

Henlopen Acres, west to east Henlopen Acres30 ftHigh point100 ft ← WE → 24 miles through the town center; vertical exaggeration about 122×. Colors: rock at the surface.
Elevation, center30 ft
Within 3 miles-10 to 70 ft
Lie of the landGently rolling (80 ft of relief)
Rock at the surfaceChesapeake Group
Its ageTertiary, 2.6 to 66 million years old
5

Henlopen Acres’s year

Henlopen Acres has a humid subtropical climate. Summer afternoons average 88° in July; winter nights fall to about 30° in January. A normal year brings about 10 inches of snow; with the rain, that comes to about 47 inches of water.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1 47.3 in
July, average88° / 71° · high / low, the warmest month
January, average46° / 30° · high / low, the coldest month
Rain and melted snow47.3 in · wettest months: July and September
Snow a year10.5 in · snowiest: February
Hottest on record102°F · June 21, 1997
Coldest on record−11°F · January 17, 1982
Wettest day on record6.98 in · August 14, 1953
Snowiest day on record15.0 in · January 26, 1987
Climate typeHumid subtropical · Köppen Cfa
1Lows below freezing · Dec. 29 to Feb. 18; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Henlopen Acres normally reaches 59° and falls to 42°. The record high is 77°, in 1989; the record low 21°, in 2019. The most rain on this date, 1.68 in, fell in 1995.

Normals 1991–2020 and records since 1945 at Lewes, 6 miles northwest. NOAA, through RCC-ACIS.
3

Where the rain goes

< 2 mito the Atlantic Oceanstraight to the shore

Rain that falls on Henlopen Acres runs straight into the Atlantic Ocean.