Monthly outlook for Penn Wynne, PA: average high 87.4°, average low 70.6°. That is 2.8° above the climate normal for August. Precipitation is expected on 6 days (about 1.2 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 16 August (93.2°), the coolest 23 August (67.9°).
87.4°/70.6°
Average high / low
+2.8°
Above normal
6 / 6
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
87.8°
83°
+2.7°
19 August – 28 August
86.8°
81.7°
+2.8°
29 August – 7 September
at normal
80.4°
—
August records over 66 years
99.3°9 August 2001All-time high
47.3°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Ardmore (2 mi).
Mon, 1090° / 72°0
90 °
Penn Wynne, Monday, 10 August
Clear. High 90°, low 72°.
Pressure29.97 inHg
Wind5.9 mph W
Humidity36%
Visibility6.2 mi
Dew point61°
Tue, 1192° / 71°0
92 °
Penn Wynne, Tuesday, 11 August
Light rain. High 92°, low 71°.
Pressure29.88 inHg
Wind6.4 mph NW
Humidity45%
Visibility6.2 mi
Dew point64°
Wed, 1286° / 73°0.05
86 °
Penn Wynne, Wednesday, 12 August
Light rain. High 86°, low 73°.
Pressure29.77 inHg
Wind8.2 mph NW
Humidity56%
Visibility6.2 mi
Dew point65°
Thu, 1385° / 71°0
85 °
Penn Wynne, Thursday, 13 August
Overcast. High 85°, low 71°.
Pressure29.88 inHg
Wind9.9 mph NW
Humidity45%
Visibility6.2 mi
Dew point60°
Fri, 1484° / 71°0
84 °
Penn Wynne, Friday, 14 August
Overcast. High 84°, low 71°.
Pressure30.09 inHg
Wind5.1 mph S
Humidity31%
Visibility—
Dew point49°
Sat, 1585° / 69°0
85 °
Penn Wynne, Saturday, 15 August
Partly cloudy. High 85°, low 69°.
Pressure30.15 inHg
Wind8.5 mph SW
Humidity38%
Visibility—
Dew point55°
Sun, 1693° / 71°0.07
93 °
Penn Wynne, Sunday, 16 August
Light rain. High 93°, low 71°.
Pressure29.85 inHg
Wind15.5 mph SW
Humidity69%
Visibility—
Dew point71°
Mon, 1785° / 68°0
85 °
Penn Wynne, Monday, 17 August
Partly cloudy. High 85°, low 68°.
Pressure29.94 inHg
Wind12.6 mph NW
Humidity31%
Visibility—
Dew point48°
Tue, 1887° / 70°0
87 °
Penn Wynne, Tuesday, 18 August
Partly cloudy. High 87°, low 70°.
Pressure30.06 inHg
Wind12.6 mph S
Humidity35%
Visibility—
Dew point54°
Wed, 1992° / 70°0.42
92 °
Penn Wynne, Wednesday, 19 August
Rain. High 92°, low 70°.
Pressure29.88 inHg
Wind10.6 mph W
Humidity40%
Visibility—
Dew point61°
Thu, 2088° / 71°0
88 °
Penn Wynne, Thursday, 20 August
Partly cloudy. High 88°, low 71°.
Pressure29.94 inHg
Wind7.4 mph W
Humidity30%
Visibility—
Dew point50°
Fri, 2188° / 74°0.09
88 °
Penn Wynne, Friday, 21 August
Light rain. High 88°, low 74°.
Pressure29.77 inHg
Wind8.1 mph W
Humidity62%
Visibility—
Dew point68°
Sat, 2278° / 69°0.49
78 °
Penn Wynne, Saturday, 22 August
Rain. High 78°, low 69°.
Pressure29.91 inHg
Wind7 mph NE
Humidity91%
Visibility—
Dew point68°
Sun, 2382° / 68°0.06
82 °
Penn Wynne, Sunday, 23 August
Light rain. High 82°, low 68°.
Pressure30.03 inHg
Wind8 mph SE
Humidity64%
Visibility—
Dew point66°
Mon, 2492° / 70°0
92 °
Penn Wynne, Monday, 24 August
Light rain. High 92°, low 70°.
Pressure29.94 inHg
Wind7.6 mph W
Humidity44%
Visibility—
Dew point63°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 65°0.06
82 °
Penn Wynne, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.06 in
Chance of precipitation15%
Record high96° (1968)
Record low54° (1987)
Wed, 2683° / 65°0.06
83 °
Penn Wynne, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.06 in
Chance of precipitation25%
Record high92° (1993)
Record low55° (1977)
Thu, 2783° / 67°0.18
83 °
Penn Wynne, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.18 in
Chance of precipitation33%
Record high92° (2020)
Record low55° (1963)
Fri, 2882° / 67°0.24
82 °
Penn Wynne, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.24 in
Chance of precipitation47%
Record high97° (2024)
Record low56° (1968)
Sat, 2982° / 66°0.12
82 °
Penn Wynne, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.12 in
Chance of precipitation30%
Record high94° (2010)
Record low49° (1982)
Sun, 3082° / 65°0.06
82 °
Penn Wynne, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.06 in
Chance of precipitation28%
Record high94° (1973)
Record low47° (1986)
Mon, 3181° / 65°0.07
81 °
Penn Wynne, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation22%
Record high95° (2010)
Record low51° (1976)
Tue, 0180° / 64°0.13
80 °
Penn Wynne, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation30%
Record high94° (2010)
Record low55° (1967)
Wed, 0280° / 64°0.11
80 °
Penn Wynne, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.11 in
Chance of precipitation35%
Record high94° (1980)
Record low53° (1970)
Thu, 0380° / 64°0.15
80 °
Penn Wynne, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.15 in
Chance of precipitation32%
Record high93° (2023)
Record low49° (1967)
Fri, 0480° / 64°0.09
80 °
Penn Wynne, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.09 in
Chance of precipitation25%
Record high97° (2023)
Record low53° (1997)
Sat, 0580° / 64°0.08
80 °
Penn Wynne, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.08 in
Chance of precipitation25%
Record high97° (2023)
Record low53° (1997)
Sun, 0679° / 63°0.21
79 °
Penn Wynne, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.21 in
Chance of precipitation33%
Record high96° (2023)
Record low51° (1984)
Mon, 0780° / 63°0.11
80 °
Penn Wynne, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation27%
Record high92° (2023)
Record low47° (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 Penn Wynne, 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 Penn Wynne, 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.