Monthly outlook for Penn, PA: average high 60.4°, average low 41.7°. That is 0.8° above the climate normal for October. Precipitation is expected on 4 days (about 2.4 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (81.6°), the coolest 19 October (28.9°).
60.4°/41.7°
Average high / low
+0.8°
Above normal
4 / 4
Wet days / normal
2.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
63.7°
60°
+2°
20 October – 29 October
54.8°
56.2°
-0.8°
30 October – 8 November
at normal
53.2°
—
October records over 66 years
86.2°1 October 2019All-time high
19°30 October 2011All-time low
Climate normals and records are computed from the nearest reference point — Huston (8 mi).
Sun, 1161° / 48°1.98
61 °
Penn, Sunday, 11 October
Heavy rain. High 61°, low 48°.
Pressure30.15 inHg
Wind7.5 mph NE
Humidity99%
Visibility1.1 mi
Dew point56°
Mon, 1272° / 51°0
72 °
Penn, Monday, 12 October
Light rain. High 72°, low 51°.
Pressure29.94 inHg
Wind11.2 mph NW
Humidity75%
Visibility6.2 mi
Dew point57°
Tue, 1382° / 54°0
82 °
Penn, Tuesday, 13 October
Clear. High 82°, low 54°.
Pressure29.91 inHg
Wind8.5 mph SW
Humidity65%
Visibility6.2 mi
Dew point63°
Wed, 1474° / 60°0.16
74 °
Penn, Wednesday, 14 October
Light rain. High 74°, low 60°.
Pressure29.94 inHg
Wind7.3 mph W
Humidity77%
Visibility6.2 mi
Dew point65°
Thu, 1563° / 50°0
63 °
Penn, Thursday, 15 October
Overcast. High 63°, low 50°.
Pressure30.27 inHg
Wind8.4 mph N
Humidity56%
Visibility—
Dew point43°
Fri, 1668° / 48°0.15
68 °
Penn, Friday, 16 October
Rain. High 68°, low 48°.
Pressure29.97 inHg
Wind16.5 mph W
Humidity64%
Visibility—
Dew point46°
Sat, 1755° / 39°0.07
55 °
Penn, Saturday, 17 October
Light rain. High 55°, low 39°.
Pressure29.94 inHg
Wind12.3 mph W
Humidity88%
Visibility—
Dew point44°
Sun, 1846° / 33°0
46 °
Penn, Sunday, 18 October
Overcast. High 46°, low 33°.
Pressure30.18 inHg
Wind13.9 mph NW
Humidity53%
Visibility—
Dew point28°
Mon, 1948° / 29°0
48 °
Penn, Monday, 19 October
Clear. High 48°, low 29°.
Pressure30.65 inHg
Wind10 mph N
Humidity44%
Visibility—
Dew point20°
Tue, 2052° / 29°0
52 °
Penn, Tuesday, 20 October
Overcast. High 52°, low 29°.
Pressure30.62 inHg
Wind2.4 mph NE
Humidity41%
Visibility—
Dew point19°
Wed, 2155° / 30°0
55 °
Penn, Wednesday, 21 October
Clear. High 55°, low 30°.
Pressure30.53 inHg
Wind4.9 mph SE
Humidity43%
Visibility—
Dew point24°
Thu, 2257° / 34°0
57 °
Penn, Thursday, 22 October
Clear. High 57°, low 34°.
Pressure30.56 inHg
Wind8.3 mph SE
Humidity53%
Visibility—
Dew point31°
Fri, 2354° / 36°0
54 °
Penn, Friday, 23 October
Partly cloudy. High 54°, low 36°.
Pressure30.42 inHg
Wind9 mph S
Humidity75%
Visibility—
Dew point40°
Sat, 2458° / 40°0
58 °
Penn, Saturday, 24 October
Overcast. High 58°, low 40°.
Pressure30.30 inHg
Wind7.6 mph E
Humidity70%
Visibility—
Dew point42°
Sun, 2554° / 40°0
54 °
Penn, Sunday, 25 October
Overcast. High 54°, low 40°.
Pressure30.21 inHg
Wind8.9 mph E
Humidity66%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2655° / 40°0.1
55 °
Penn, Monday, 26 October
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.1 in
Chance of precipitation30%
Record high78° (1963)
Record low28° (1962)
Tue, 2756° / 41°0.15
56 °
Penn, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.15 in
Chance of precipitation28%
Record high78° (1963)
Record low26° (1988)
Wed, 2856° / 40°0.09
56 °
Penn, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.09 in
Chance of precipitation30%
Record high74° (2014)
Record low23° (1976)
Thu, 2954° / 38°0.2
54 °
Penn, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.2 in
Chance of precipitation30%
Record high70° (2016)
Record low24° (1965)
Fri, 3054° / 38°0.09
54 °
Penn, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.09 in
Chance of precipitation25%
Record high76° (2024)
Record low19° (2011)
Sat, 3155° / 39°0.05
55 °
Penn, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.05 in
Chance of precipitation27%
Record high79° (2024)
Record low22° (2011)
Sun, 0155° / 40°0.07
55 °
Penn, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.07 in
Chance of precipitation20%
Record high73° (1974)
Record low21° (2002)
Mon, 0255° / 40°0.14
55 °
Penn, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.14 in
Chance of precipitation37%
Record high75° (1982)
Record low27° (1976)
Tue, 0354° / 38°0.07
54 °
Penn, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.07 in
Chance of precipitation27%
Record high72° (2003)
Record low27° (2002)
Wed, 0452° / 38°0.09
52 °
Penn, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.09 in
Chance of precipitation25%
Record high73° (2003)
Record low25° (1991)
Thu, 0552° / 38°0.12
52 °
Penn, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.12 in
Chance of precipitation30%
Record high73° (2024)
Record low19° (1991)
Fri, 0652° / 38°0.05
52 °
Penn, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.05 in
Chance of precipitation33%
Record high76° (2022)
Record low24° (1995)
Sat, 0751° / 37°0.12
51 °
Penn, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.12 in
Chance of precipitation37%
Record high68° (2020)
Record low22° (1962)
Sun, 0851° / 35°0.13
51 °
Penn, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.13 in
Chance of precipitation25%
Record high71° (2020)
Record low22° (1960)
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, 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, 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.