Monthly outlook for Greenbank, DE: average high 86.4°, average low 68.3°. That is 2.1° above the climate normal for August. Precipitation is expected on 3 days (about 0.4 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 23 August (95.1°), the coolest 16 August (58.6°).
86.4°/68.3°
Average high / low
+2.1°
Above 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
82.5°
83.3°
-0.4°
19 August – 28 August
92.7°
82.1°
+5.9°
29 August – 7 September
at normal
80.9°
—
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 (2 mi).
Mon, 1088° / 71°0
88 °
Greenbank, Monday, 10 August
Mostly clear. High 88°, low 71°.
Pressure30.00 inHg
Wind5.1 mph W
Humidity41%
Visibility6.2 mi
Dew point63°
Tue, 1188° / 72°0.02
88 °
Greenbank, Tuesday, 11 August
Light rain. High 88°, low 72°.
Pressure29.88 inHg
Wind11.3 mph NW
Humidity53%
Visibility6.2 mi
Dew point65°
Wed, 1285° / 71°0.02
85 °
Greenbank, Wednesday, 12 August
Light rain. High 85°, low 71°.
Pressure29.77 inHg
Wind10.6 mph W
Humidity60%
Visibility6.2 mi
Dew point66°
Thu, 1384° / 69°0.06
84 °
Greenbank, Thursday, 13 August
Light rain. High 84°, low 69°.
Pressure29.80 inHg
Wind13.3 mph NW
Humidity41%
Visibility—
Dew point56°
Fri, 1477° / 63°0
77 °
Greenbank, Friday, 14 August
Overcast. High 77°, low 63°.
Pressure30.06 inHg
Wind10.5 mph NW
Humidity39%
Visibility—
Dew point47°
Sat, 1577° / 60°0
77 °
Greenbank, Saturday, 15 August
Clear. High 77°, low 60°.
Pressure30.12 inHg
Wind11.6 mph NW
Humidity37%
Visibility—
Dew point46°
Sun, 1679° / 59°0
79 °
Greenbank, Sunday, 16 August
Overcast. High 79°, low 59°.
Pressure30.12 inHg
Wind6.5 mph NW
Humidity34%
Visibility—
Dew point46°
Mon, 1776° / 62°0
76 °
Greenbank, Monday, 17 August
Overcast. High 76°, low 62°.
Pressure30.00 inHg
Wind7.1 mph S
Humidity48%
Visibility—
Dew point54°
Tue, 1886° / 65°0.01
86 °
Greenbank, Tuesday, 18 August
Light rain. High 86°, low 65°.
Pressure30.00 inHg
Wind6.3 mph SE
Humidity41%
Visibility—
Dew point57°
Wed, 1989° / 67°0
89 °
Greenbank, Wednesday, 19 August
Clear. High 89°, low 67°.
Pressure30.06 inHg
Wind5.9 mph SE
Humidity36%
Visibility—
Dew point56°
Thu, 2090° / 68°0
90 °
Greenbank, Thursday, 20 August
Partly cloudy. High 90°, low 68°.
Pressure30.03 inHg
Wind5.4 mph S
Humidity36%
Visibility—
Dew point57°
Fri, 2195° / 71°0.25
95 °
Greenbank, Friday, 21 August
Rain. High 95°, low 71°.
Pressure29.85 inHg
Wind10.5 mph SW
Humidity43%
Visibility—
Dew point65°
Sat, 2293° / 74°0.09
93 °
Greenbank, Saturday, 22 August
Light rain. High 93°, low 74°.
Pressure29.88 inHg
Wind7 mph N
Humidity48%
Visibility—
Dew point68°
Sun, 2395° / 72°0
95 °
Greenbank, Sunday, 23 August
Clear. High 95°, low 72°.
Pressure29.91 inHg
Wind5.2 mph N
Humidity31%
Visibility—
Dew point57°
Mon, 2495° / 77°0
95 °
Greenbank, Monday, 24 August
Overcast. High 95°, low 77°.
Pressure29.94 inHg
Wind6.7 mph NW
Humidity53%
Visibility—
Dew point71°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 66°0.06
83 °
Greenbank, 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 °
Greenbank, 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 °
Greenbank, 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 °
Greenbank, 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 °
Greenbank, 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 °
Greenbank, 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 °
Greenbank, 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 °
Greenbank, 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 °
Greenbank, 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 °
Greenbank, 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 °
Greenbank, 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 °
Greenbank, 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 °
Greenbank, 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)
Mon, 0780° / 64°0.11
80 °
Greenbank, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.11 in
Chance of precipitation28%
Record high91° (1998)
Record low50° (1984)
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 Greenbank, 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 Greenbank, 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.