Monthly outlook for Hollyville, DE: average high 86.8°, average low 69.7°. That is 3.2° above the climate normal for August. Precipitation is expected on 5 days (about 0.7 inches), against a normal of 6 days and 2.4 inches. The warmest day looks like 24 August (102.1°), the coolest 16 August (58.9°).
86.8°/69.7°
Average high / low
+3.2°
Above normal
5 / 6
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.1°
81.6°
+0.9°
19 August – 28 August
92.9°
80.3°
+7°
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 (9 mi).
Mon, 1091° / 75°0
91 °
Hollyville, Monday, 10 August
Mostly clear. High 91°, low 75°.
Pressure30.00 inHg
Wind3.6 mph W
Humidity49%
Visibility6.2 mi
Dew point70°
Tue, 1190° / 76°0
90 °
Hollyville, Tuesday, 11 August
Overcast. High 90°, low 76°.
Pressure29.88 inHg
Wind15.8 mph NW
Humidity53%
Visibility6.2 mi
Dew point67°
Wed, 1288° / 74°0.01
88 °
Hollyville, Wednesday, 12 August
Light rain. High 88°, low 74°.
Pressure29.77 inHg
Wind10.6 mph NW
Humidity48%
Visibility6.2 mi
Dew point66°
Thu, 1389° / 71°0.14
89 °
Hollyville, Thursday, 13 August
Light rain. High 89°, low 71°.
Pressure29.77 inHg
Wind15.6 mph W
Humidity44%
Visibility—
Dew point62°
Fri, 1478° / 63°0
78 °
Hollyville, Friday, 14 August
Overcast. High 78°, low 63°.
Pressure30.06 inHg
Wind10.7 mph NW
Humidity36%
Visibility—
Dew point47°
Sat, 1577° / 62°0
77 °
Hollyville, Saturday, 15 August
Mostly clear. High 77°, low 62°.
Pressure30.12 inHg
Wind13.7 mph NW
Humidity34%
Visibility—
Dew point46°
Sun, 1680° / 59°0
80 °
Hollyville, Sunday, 16 August
Overcast. High 80°, low 59°.
Pressure30.15 inHg
Wind7.8 mph N
Humidity33%
Visibility—
Dew point46°
Mon, 1772° / 61°0.16
72 °
Hollyville, Monday, 17 August
Light rain. High 72°, low 61°.
Pressure30.03 inHg
Wind7 mph SE
Humidity74%
Visibility—
Dew point62°
Tue, 1879° / 67°0.15
79 °
Hollyville, Tuesday, 18 August
Light rain. High 79°, low 67°.
Pressure30.03 inHg
Wind9.6 mph E
Humidity75%
Visibility—
Dew point67°
Wed, 1983° / 68°0
83 °
Hollyville, Wednesday, 19 August
Partly cloudy. High 83°, low 68°.
Pressure30.09 inHg
Wind11.3 mph NE
Humidity53%
Visibility—
Dew point62°
Thu, 2088° / 68°0
88 °
Hollyville, Thursday, 20 August
Clear. High 88°, low 68°.
Pressure30.03 inHg
Wind8 mph E
Humidity37%
Visibility—
Dew point56°
Fri, 2195° / 69°0.11
95 °
Hollyville, Friday, 21 August
Light rain. High 95°, low 69°.
Pressure29.88 inHg
Wind15.8 mph S
Humidity40%
Visibility—
Dew point64°
Sat, 2292° / 75°0.08
92 °
Hollyville, Saturday, 22 August
Light rain. High 92°, low 75°.
Pressure29.88 inHg
Wind8.4 mph E
Humidity57%
Visibility—
Dew point73°
Sun, 2398° / 75°0
98 °
Hollyville, Sunday, 23 August
Clear. High 98°, low 75°.
Pressure29.91 inHg
Wind8.9 mph S
Humidity33%
Visibility—
Dew point61°
Mon, 24102° / 77°0.02
102 °
Hollyville, Monday, 24 August
Light rain. High 102°, low 77°.
Pressure29.94 inHg
Wind16.6 mph W
Humidity35%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 70°0.05
80 °
Hollyville, 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 °
Hollyville, 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 °
Hollyville, 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 °
Hollyville, 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 °
Hollyville, 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 °
Hollyville, 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 °
Hollyville, 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 °
Hollyville, 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 °
Hollyville, 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 °
Hollyville, 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 °
Hollyville, 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 °
Hollyville, 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 °
Hollyville, 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 °
Hollyville, 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 Hollyville, 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 Hollyville, 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.