Monthly outlook for Greenwood Hills, PA: average high 81.8°, average low 61.3°. That is 0.2° below the climate normal for August. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 22 August (91.1°), the coolest 16 August (51.7°).
81.8°/61.3°
Average high / low
−0.2°
Below normal
3 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
81°
82.8°
-1°
19 August – 28 August
83.1°
81.6°
+0.8°
29 August – 7 September
at normal
80.1°
—
August records over 66 years
98.4°12 August 2021All-time high
48°30 August 2025All-time low
Climate normals and records are computed from the nearest reference point — Messiah College (12 mi).
Mon, 1089° / 68°0.02
89 °
Greenwood Hills, Monday, 10 August
Light rain. High 89°, low 68°.
Pressure30.00 inHg
Wind7.5 mph W
Humidity47%
Visibility6.2 mi
Dew point64°
Tue, 1186° / 68°0.1
86 °
Greenwood Hills, Tuesday, 11 August
Rain. High 86°, low 68°.
Pressure29.91 inHg
Wind11.9 mph NW
Humidity57%
Visibility6.2 mi
Dew point65°
Wed, 1285° / 64°0.02
85 °
Greenwood Hills, Wednesday, 12 August
Light rain. High 85°, low 64°.
Pressure29.83 inHg
Wind4.5 mph W
Humidity57%
Visibility6.2 mi
Dew point61°
Thu, 1382° / 66°0
82 °
Greenwood Hills, Thursday, 13 August
Overcast. High 82°, low 66°.
Pressure29.85 inHg
Wind16 mph NW
Humidity41%
Visibility6.2 mi
Dew point53°
Fri, 1473° / 60°0
73 °
Greenwood Hills, Friday, 14 August
Overcast. High 73°, low 60°.
Pressure30.06 inHg
Wind8.7 mph SW
Humidity51%
Visibility—
Dew point49°
Sat, 1575° / 54°0
75 °
Greenwood Hills, Saturday, 15 August
Overcast. High 75°, low 54°.
Pressure30.21 inHg
Wind12.8 mph N
Humidity34%
Visibility—
Dew point43°
Sun, 1672° / 52°0.01
72 °
Greenwood Hills, Sunday, 16 August
Light rain. High 72°, low 52°.
Pressure30.18 inHg
Wind3.4 mph SE
Humidity58%
Visibility—
Dew point51°
Mon, 1777° / 60°0.01
77 °
Greenwood Hills, Monday, 17 August
Light rain. High 77°, low 60°.
Pressure29.91 inHg
Wind9.1 mph N
Humidity62%
Visibility—
Dew point59°
Tue, 1885° / 59°0
85 °
Greenwood Hills, Tuesday, 18 August
Overcast. High 85°, low 59°.
Pressure29.97 inHg
Wind6.6 mph SE
Humidity34%
Visibility—
Dew point50°
Wed, 1982° / 63°0.27
82 °
Greenwood Hills, Wednesday, 19 August
Rain. High 82°, low 63°.
Pressure29.80 inHg
Wind14.6 mph S
Humidity65%
Visibility—
Dew point67°
Thu, 2079° / 62°0
79 °
Greenwood Hills, Thursday, 20 August
Clear. High 79°, low 62°.
Pressure29.77 inHg
Wind13.5 mph NW
Humidity49%
Visibility—
Dew point57°
Fri, 2182° / 56°0
82 °
Greenwood Hills, Friday, 21 August
Clear. High 82°, low 56°.
Pressure29.88 inHg
Wind8.1 mph NW
Humidity34%
Visibility—
Dew point47°
Sat, 2291° / 58°0
91 °
Greenwood Hills, Saturday, 22 August
Clear. High 91°, low 58°.
Pressure29.88 inHg
Wind14.9 mph S
Humidity30%
Visibility—
Dew point51°
Sun, 2384° / 65°0.06
84 °
Greenwood Hills, Sunday, 23 August
Light rain. High 84°, low 65°.
Pressure29.91 inHg
Wind16.7 mph W
Humidity38%
Visibility—
Dew point54°
Mon, 2480° / 55°0
80 °
Greenwood Hills, Monday, 24 August
Clear. High 80°, low 55°.
Pressure30.18 inHg
Wind7.7 mph N
Humidity29%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 64°0.05
82 °
Greenwood Hills, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.05 in
Chance of precipitation20%
Record high94° (2007)
Record low53° (1971)
Wed, 2683° / 64°0.05
83 °
Greenwood Hills, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low64°
Average precipitation0.05 in
Chance of precipitation23%
Record high93° (1975)
Record low54° (1963)
Thu, 2783° / 65°0.15
83 °
Greenwood Hills, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.15 in
Chance of precipitation38%
Record high94° (2020)
Record low52° (2025)
Fri, 2883° / 66°0.17
83 °
Greenwood Hills, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.17 in
Chance of precipitation38%
Record high96° (2024)
Record low51° (2025)
Sat, 2982° / 65°0.09
82 °
Greenwood Hills, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation37%
Record high92° (1973)
Record low48° (1982)
Sun, 3081° / 64°0.06
81 °
Greenwood Hills, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.06 in
Chance of precipitation23%
Record high93° (1991)
Record low48° (2025)
Mon, 3181° / 64°0.08
81 °
Greenwood Hills, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation25%
Record high94° (1973)
Record low51° (2025)
Tue, 0179° / 63°0.12
79 °
Greenwood Hills, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.12 in
Chance of precipitation25%
Record high93° (2010)
Record low50° (1967)
Wed, 0280° / 63°0.12
80 °
Greenwood Hills, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.12 in
Chance of precipitation35%
Record high95° (1980)
Record low52° (1967)
Thu, 0381° / 62°0.06
81 °
Greenwood Hills, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low62°
Average precipitation0.06 in
Chance of precipitation20%
Record high92° (1993)
Record low49° (1967)
Fri, 0480° / 63°0.11
80 °
Greenwood Hills, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation27%
Record high94° (2023)
Record low52° (1997)
Sat, 0579° / 63°0.07
79 °
Greenwood Hills, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.07 in
Chance of precipitation23%
Record high93° (2023)
Record low51° (1974)
Sun, 0679° / 62°0.18
79 °
Greenwood Hills, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.18 in
Chance of precipitation30%
Record high94° (2023)
Record low50° (2000)
Mon, 0780° / 62°0.11
80 °
Greenwood Hills, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.11 in
Chance of precipitation22%
Record high91° (2016)
Record low48° (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 Greenwood Hills, PA 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 Greenwood Hills, PA 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.