Monthly outlook for Shermans Dale, PA: average high 86.7°, average low 65.9°. That is 2.5° above the climate normal for August. Precipitation is expected on 8 days (about 0.9 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 16 August (98.9°), the coolest 15 August (60.5°).
86.7°/65.9°
Average high / low
+2.5°
Above normal
8 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
85.9°
82.8°
+1.7°
19 August – 28 August
87.9°
81.6°
+3.5°
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 (15 mi).
Mon, 1084° / 71°0.06
84 °
Shermans Dale, Monday, 10 August
Light rain. High 84°, low 71°.
Pressure29.97 inHg
Wind6.2 mph W
Humidity57%
Visibility6.2 mi
Dew point68°
Tue, 1188° / 68°0.24
88 °
Shermans Dale, Tuesday, 11 August
Rain. High 88°, low 68°.
Pressure29.91 inHg
Wind9.5 mph NW
Humidity63%
Visibility6.2 mi
Dew point67°
Wed, 1280° / 67°0.09
80 °
Shermans Dale, Wednesday, 12 August
Light rain. High 80°, low 67°.
Pressure29.80 inHg
Wind9.4 mph W
Humidity75%
Visibility6.2 mi
Dew point68°
Thu, 1382° / 66°0
82 °
Shermans Dale, Thursday, 13 August
Overcast. High 82°, low 66°.
Pressure29.94 inHg
Wind12 mph NW
Humidity42%
Visibility6.2 mi
Dew point54°
Fri, 1480° / 62°0
80 °
Shermans Dale, Friday, 14 August
Overcast. High 80°, low 62°.
Pressure30.09 inHg
Wind6.2 mph S
Humidity50%
Visibility—
Dew point55°
Sat, 1583° / 61°0
83 °
Shermans Dale, Saturday, 15 August
Overcast. High 83°, low 61°.
Pressure30.15 inHg
Wind5.3 mph SW
Humidity47%
Visibility—
Dew point58°
Sun, 1699° / 66°0.02
99 °
Shermans Dale, Sunday, 16 August
Light rain. High 99°, low 66°.
Pressure29.77 inHg
Wind17.7 mph W
Humidity33%
Visibility—
Dew point61°
Mon, 1783° / 65°0
83 °
Shermans Dale, Monday, 17 August
Overcast. High 83°, low 65°.
Pressure30.00 inHg
Wind11.6 mph NW
Humidity38%
Visibility—
Dew point51°
Tue, 1890° / 64°0.06
90 °
Shermans Dale, Tuesday, 18 August
Light rain. High 90°, low 64°.
Pressure30.00 inHg
Wind13.3 mph S
Humidity35%
Visibility—
Dew point55°
Wed, 1991° / 67°0.09
91 °
Shermans Dale, Wednesday, 19 August
Light rain. High 91°, low 67°.
Pressure29.91 inHg
Wind14.6 mph NW
Humidity37%
Visibility—
Dew point59°
Thu, 2089° / 61°0.01
89 °
Shermans Dale, Thursday, 20 August
Light rain. High 89°, low 61°.
Pressure29.94 inHg
Wind5.6 mph NW
Humidity32%
Visibility—
Dew point51°
Fri, 2189° / 66°0.06
89 °
Shermans Dale, Friday, 21 August
Light rain. High 89°, low 66°.
Pressure29.77 inHg
Wind10.4 mph NW
Humidity55%
Visibility—
Dew point65°
Sat, 2283° / 67°0.15
83 °
Shermans Dale, Saturday, 22 August
Light rain. High 83°, low 67°.
Pressure29.91 inHg
Wind6.5 mph NE
Humidity57%
Visibility—
Dew point62°
Sun, 2385° / 65°0.05
85 °
Shermans Dale, Sunday, 23 August
Light rain. High 85°, low 65°.
Pressure30.00 inHg
Wind7.2 mph S
Humidity62%
Visibility—
Dew point65°
Mon, 2491° / 67°0.01
91 °
Shermans Dale, Monday, 24 August
Light rain. High 91°, low 67°.
Pressure29.94 inHg
Wind10.3 mph NW
Humidity38%
Visibility—
Dew point59°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 64°0.05
82 °
Shermans Dale, 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 °
Shermans Dale, 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 °
Shermans Dale, 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 °
Shermans Dale, 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 °
Shermans Dale, 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 °
Shermans Dale, 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 °
Shermans Dale, 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 °
Shermans Dale, 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 °
Shermans Dale, 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 °
Shermans Dale, 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 °
Shermans Dale, 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 °
Shermans Dale, 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 °
Shermans Dale, 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 °
Shermans Dale, 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 Shermans Dale, 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 Shermans Dale, 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.