Monthly outlook for Henlopen Acres, DE: average high 80.4°, average low 70.7°. That is 0.3° below the climate normal for August. Precipitation is expected on 3 days (about 0.4 inches), against a normal of 6 days and 2.4 inches. The warmest day looks like 10 August (91.3°), the coolest 14 August (64°).
80.4°/70.7°
Average high / low
−0.3°
Below normal
3 / 6
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.3°
81.6°
-0.7°
19 August – 28 August
80.4°
80.3°
+0.1°
29 August – 7 September
at normal
79.2°
—
August records over 66 years
95.7°15 August 2023All-time high
54.1°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Dewey Beach (2 mi).
Mon, 1091° / 76°0
91 °
Henlopen Acres, Monday, 10 August
Mostly clear. High 91°, low 76°.
Pressure30.00 inHg
Wind2.3 mph S
Humidity66%
Visibility6.2 mi
Dew point72°
Tue, 1184° / 76°0
84 °
Henlopen Acres, Tuesday, 11 August
Overcast. High 84°, low 76°.
Pressure29.88 inHg
Wind12.1 mph W
Humidity64%
Visibility6.2 mi
Dew point68°
Wed, 1281° / 74°0.09
81 °
Henlopen Acres, Wednesday, 12 August
Light rain. High 81°, low 74°.
Pressure29.85 inHg
Wind6.4 mph NW
Humidity73%
Visibility6.2 mi
Dew point69°
Thu, 1385° / 72°0.02
85 °
Henlopen Acres, Thursday, 13 August
Light rain. High 85°, low 72°.
Pressure29.83 inHg
Wind15.3 mph W
Humidity58%
Visibility—
Dew point68°
Fri, 1474° / 64°0.03
74 °
Henlopen Acres, Friday, 14 August
Light rain. High 74°, low 64°.
Pressure30.06 inHg
Wind8.7 mph NW
Humidity61%
Visibility—
Dew point56°
Sat, 1575° / 65°0
75 °
Henlopen Acres, Saturday, 15 August
Overcast. High 75°, low 65°.
Pressure30.18 inHg
Wind15.7 mph N
Humidity45%
Visibility—
Dew point50°
Sun, 1673° / 67°0
73 °
Henlopen Acres, Sunday, 16 August
Overcast. High 73°, low 67°.
Pressure30.18 inHg
Wind13.1 mph S
Humidity52%
Visibility—
Dew point54°
Mon, 1773° / 69°0.19
73 °
Henlopen Acres, Monday, 17 August
Light rain. High 73°, low 69°.
Pressure29.91 inHg
Wind16.5 mph S
Humidity96%
Visibility—
Dew point70°
Tue, 1878° / 68°0
78 °
Henlopen Acres, Tuesday, 18 August
Mostly clear. High 78°, low 68°.
Pressure29.97 inHg
Wind10.8 mph N
Humidity55%
Visibility—
Dew point58°
Wed, 1978° / 71°0.11
78 °
Henlopen Acres, Wednesday, 19 August
Light rain. High 78°, low 71°.
Pressure29.88 inHg
Wind13.4 mph SE
Humidity66%
Visibility—
Dew point65°
Thu, 2085° / 70°0
85 °
Henlopen Acres, Thursday, 20 August
Mostly clear. High 85°, low 70°.
Pressure29.74 inHg
Wind12.5 mph W
Humidity64%
Visibility—
Dew point68°
Fri, 2176° / 70°0.01
76 °
Henlopen Acres, Friday, 21 August
Light rain. High 76°, low 70°.
Pressure29.88 inHg
Wind11.5 mph NE
Humidity61%
Visibility—
Dew point60°
Sat, 2281° / 68°0
81 °
Henlopen Acres, Saturday, 22 August
Clear. High 81°, low 68°.
Pressure29.97 inHg
Wind21 mph S
Humidity66%
Visibility—
Dew point67°
Sun, 2387° / 77°0
87 °
Henlopen Acres, Sunday, 23 August
Overcast. High 87°, low 77°.
Pressure29.91 inHg
Wind19.5 mph SW
Humidity54%
Visibility—
Dew point67°
Mon, 2476° / 70°0
76 °
Henlopen Acres, Monday, 24 August
Clear. High 76°, low 70°.
Pressure30.15 inHg
Wind13.6 mph N
Humidity48%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 70°0.05
80 °
Henlopen Acres, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low70°
Average precipitation0.05 in
Chance of precipitation18%
Record high92° (2023)
Record low62° (1994)
Wed, 2681° / 70°0.06
81 °
Henlopen Acres, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low70°
Average precipitation0.06 in
Chance of precipitation27%
Record high89° (2016)
Record low60° (1977)
Thu, 2781° / 71°0.12
81 °
Henlopen Acres, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low71°
Average precipitation0.12 in
Chance of precipitation30%
Record high92° (2020)
Record low62° (1963)
Fri, 2881° / 71°0.19
81 °
Henlopen Acres, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low71°
Average precipitation0.19 in
Chance of precipitation43%
Record high94° (2024)
Record low58° (2025)
Sat, 2980° / 71°0.09
80 °
Henlopen Acres, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low71°
Average precipitation0.09 in
Chance of precipitation32%
Record high91° (2018)
Record low57° (1982)
Sun, 3080° / 70°0.07
80 °
Henlopen Acres, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low70°
Average precipitation0.07 in
Chance of precipitation28%
Record high90° (1973)
Record low54° (1986)
Mon, 3180° / 70°0.08
80 °
Henlopen Acres, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low70°
Average precipitation0.08 in
Chance of precipitation18%
Record high90° (1991)
Record low56° (2025)
Tue, 0179° / 70°0.19
79 °
Henlopen Acres, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low70°
Average precipitation0.19 in
Chance of precipitation37%
Record high89° (2010)
Record low59° (1986)
Wed, 0279° / 69°0.1
79 °
Henlopen Acres, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low69°
Average precipitation0.1 in
Chance of precipitation33%
Record high90° (1980)
Record low60° (2023)
Thu, 0379° / 69°0.09
79 °
Henlopen Acres, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low69°
Average precipitation0.09 in
Chance of precipitation32%
Record high90° (2023)
Record low59° (1967)
Fri, 0480° / 69°0.11
80 °
Henlopen Acres, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low69°
Average precipitation0.11 in
Chance of precipitation25%
Record high93° (2023)
Record low59° (1997)
Sat, 0579° / 69°0.07
79 °
Henlopen Acres, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low69°
Average precipitation0.07 in
Chance of precipitation30%
Record high92° (2023)
Record low60° (1994)
Sun, 0679° / 69°0.19
79 °
Henlopen Acres, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low69°
Average precipitation0.19 in
Chance of precipitation38%
Record high93° (2023)
Record low59° (1962)
Mon, 0778° / 68°0.09
78 °
Henlopen Acres, Monday, 7 September
Climate normal for this date — 60-year average.
Average high78°
Average low68°
Average precipitation0.09 in
Chance of precipitation28%
Record high91° (1983)
Record low59° (1965)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Henlopen Acres, DE are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Henlopen Acres, DE since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.