Monthly outlook for Chestnut Hill Estates, DE: average high 81.6°, average low 66.2°. That is 0.7° below the climate normal for August. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 10 August (88.8°), the coolest 22 August (58°).
81.6°/66.2°
Average high / low
−0.7°
Below normal
5 / 6
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
83.9°
83.5°
+0.2°
18 August – 27 August
77.7°
82°
-2.4°
28 August – 6 September
at normal
81.1°
—
August records over 66 years
97.2°9 August 2001All-time high
50.5°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Elsmere (7 mi).
Sun, 0989° / 73°0
89 °
Chestnut Hill Estates, Sunday, 9 August
Partly cloudy. High 89°, low 73°.
Pressure30.03 inHg
Wind8.4 mph NW
Humidity52%
Visibility6.2 mi
Dew point68°
Mon, 1089° / 73°0.02
89 °
Chestnut Hill Estates, Monday, 10 August
Light rain. High 89°, low 73°.
Pressure30.00 inHg
Wind5.9 mph NW
Humidity45%
Visibility6.2 mi
Dew point64°
Tue, 1189° / 71°0.22
89 °
Chestnut Hill Estates, Tuesday, 11 August
Rain. High 89°, low 71°.
Pressure29.91 inHg
Wind4.5 mph NW
Humidity55%
Visibility6.2 mi
Dew point69°
Wed, 1286° / 72°0.02
86 °
Chestnut Hill Estates, Wednesday, 12 August
Light rain. High 86°, low 72°.
Pressure29.77 inHg
Wind10.2 mph W
Humidity64%
Visibility6.2 mi
Dew point68°
Thu, 1384° / 69°0
84 °
Chestnut Hill Estates, Thursday, 13 August
Mostly clear. High 84°, low 69°.
Pressure29.80 inHg
Wind12.5 mph NW
Humidity42%
Visibility—
Dew point58°
Fri, 1478° / 62°0
78 °
Chestnut Hill Estates, Friday, 14 August
Partly cloudy. High 78°, low 62°.
Pressure30.06 inHg
Wind9.1 mph NW
Humidity39%
Visibility—
Dew point49°
Sat, 1579° / 62°0
79 °
Chestnut Hill Estates, Saturday, 15 August
Clear. High 79°, low 62°.
Pressure30.15 inHg
Wind11.5 mph NW
Humidity38%
Visibility—
Dew point49°
Sun, 1680° / 61°0
80 °
Chestnut Hill Estates, Sunday, 16 August
Overcast. High 80°, low 61°.
Pressure30.18 inHg
Wind5.9 mph NW
Humidity38%
Visibility—
Dew point50°
Mon, 1779° / 64°0.18
79 °
Chestnut Hill Estates, Monday, 17 August
Rain. High 79°, low 64°.
Pressure30.09 inHg
Wind9.3 mph S
Humidity59%
Visibility—
Dew point60°
Tue, 1872° / 66°0.19
72 °
Chestnut Hill Estates, Tuesday, 18 August
Light rain. High 72°, low 66°.
Pressure30.06 inHg
Wind7.3 mph SE
Humidity90%
Visibility—
Dew point66°
Wed, 1975° / 66°0.09
75 °
Chestnut Hill Estates, Wednesday, 19 August
Light rain. High 75°, low 66°.
Pressure29.94 inHg
Wind9.6 mph SE
Humidity89%
Visibility—
Dew point64°
Thu, 2079° / 68°0.74
79 °
Chestnut Hill Estates, Thursday, 20 August
Rain. High 79°, low 68°.
Pressure29.71 inHg
Wind14 mph NW
Humidity48%
Visibility—
Dew point56°
Fri, 2178° / 60°0
78 °
Chestnut Hill Estates, Friday, 21 August
Clear. High 78°, low 60°.
Pressure29.88 inHg
Wind13.3 mph NW
Humidity41%
Visibility—
Dew point49°
Sat, 2278° / 58°0
78 °
Chestnut Hill Estates, Saturday, 22 August
Clear. High 78°, low 58°.
Pressure30.06 inHg
Wind6.4 mph NW
Humidity33%
Visibility—
Dew point44°
Sun, 2384° / 63°0
84 °
Chestnut Hill Estates, Sunday, 23 August
Light rain. High 84°, low 63°.
Pressure29.97 inHg
Wind14.8 mph SW
Humidity55%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 66°0.07
82 °
Chestnut Hill Estates, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.07 in
Chance of precipitation23%
Record high92° (1998)
Record low56° (1971)
Tue, 2583° / 66°0.06
83 °
Chestnut Hill Estates, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.06 in
Chance of precipitation12%
Record high94° (1968)
Record low57° (1987)
Wed, 2683° / 67°0.06
83 °
Chestnut Hill Estates, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.06 in
Chance of precipitation22%
Record high92° (1975)
Record low57° (1963)
Thu, 2783° / 68°0.18
83 °
Chestnut Hill Estates, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.18 in
Chance of precipitation35%
Record high92° (2020)
Record low58° (1963)
Fri, 2883° / 68°0.23
83 °
Chestnut Hill Estates, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.23 in
Chance of precipitation47%
Record high97° (2024)
Record low58° (1968)
Sat, 2982° / 68°0.12
82 °
Chestnut Hill Estates, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low68°
Average precipitation0.12 in
Chance of precipitation23%
Record high94° (1973)
Record low51° (1982)
Sun, 3082° / 67°0.07
82 °
Chestnut Hill Estates, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.07 in
Chance of precipitation27%
Record high94° (1973)
Record low51° (1986)
Mon, 3182° / 67°0.08
82 °
Chestnut Hill Estates, Monday, 31 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.08 in
Chance of precipitation18%
Record high95° (2010)
Record low54° (1976)
Tue, 0181° / 66°0.14
81 °
Chestnut Hill Estates, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.14 in
Chance of precipitation30%
Record high93° (2010)
Record low56° (1967)
Wed, 0280° / 65°0.1
80 °
Chestnut Hill Estates, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.1 in
Chance of precipitation35%
Record high94° (1980)
Record low55° (1967)
Thu, 0381° / 65°0.13
81 °
Chestnut Hill Estates, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.13 in
Chance of precipitation35%
Record high92° (2015)
Record low51° (1967)
Fri, 0481° / 66°0.09
81 °
Chestnut Hill Estates, Friday, 4 September
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.09 in
Chance of precipitation25%
Record high95° (2023)
Record low53° (2024)
Sat, 0580° / 65°0.11
80 °
Chestnut Hill Estates, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.11 in
Chance of precipitation28%
Record high96° (2023)
Record low54° (1997)
Sun, 0680° / 65°0.22
80 °
Chestnut Hill Estates, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.22 in
Chance of precipitation28%
Record high96° (2023)
Record low54° (1962)
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 Chestnut Hill Estates, 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 Chestnut Hill Estates, 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.