Monthly outlook for Penn, PA: average high 64.4°, average low 46.6°. That is 4.2° above the climate normal for October. Precipitation is expected on 3 days (about 1.2 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 16 October (82.1°), the coolest 18 October (35.8°).
64.4°/46.6°
Average high / low
+4.2°
Above normal
3 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
65.8°
57.9°
+4.4°
25 October – 3 November
62.2°
55°
+4°
4 November – 13 November
at normal
50.3°
—
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).
Fri, 1682° / 56°0.04
82 °
Penn, Friday, 16 October
Light rain. High 82°, low 56°.
Pressure29.71 inHg
Wind11.6 mph SW
Humidity61%
Visibility6.2 mi
Dew point64°
Sat, 1755° / 40°0
55 °
Penn, Saturday, 17 October
Overcast. High 55°, low 40°.
Pressure30.27 inHg
Wind12.3 mph NW
Humidity52%
Visibility6.2 mi
Dew point31°
Sun, 1858° / 36°0
58 °
Penn, Sunday, 18 October
Clear. High 58°, low 36°.
Pressure30.59 inHg
Wind1.9 mph SW
Humidity51%
Visibility6.2 mi
Dew point35°
Mon, 1965° / 39°0
65 °
Penn, Monday, 19 October
Clear. High 65°, low 39°.
Pressure30.53 inHg
Wind2.7 mph SW
Humidity48%
Visibility—
Dew point34°
Tue, 2066° / 38°0
66 °
Penn, Tuesday, 20 October
Mostly clear. High 66°, low 38°.
Pressure30.36 inHg
Wind2.4 mph NE
Humidity49%
Visibility—
Dew point38°
Wed, 2165° / 44°0
65 °
Penn, Wednesday, 21 October
Clear. High 65°, low 44°.
Pressure30.45 inHg
Wind3.3 mph NE
Humidity60%
Visibility—
Dew point43°
Thu, 2264° / 44°0
64 °
Penn, Thursday, 22 October
Clear. High 64°, low 44°.
Pressure30.47 inHg
Wind6.6 mph S
Humidity73%
Visibility—
Dew point47°
Fri, 2368° / 46°0
68 °
Penn, Friday, 23 October
Clear. High 68°, low 46°.
Pressure30.39 inHg
Wind3.8 mph S
Humidity68%
Visibility—
Dew point47°
Sat, 2470° / 49°0
70 °
Penn, Saturday, 24 October
Partly cloudy. High 70°, low 49°.
Pressure30.42 inHg
Wind5.5 mph SE
Humidity66%
Visibility—
Dew point50°
Sun, 2567° / 48°0
67 °
Penn, Sunday, 25 October
Mostly clear. High 67°, low 48°.
Pressure30.39 inHg
Wind9.6 mph S
Humidity66%
Visibility—
Dew point47°
Mon, 2668° / 50°0.06
68 °
Penn, Monday, 26 October
Light rain. High 68°, low 50°.
Pressure30.09 inHg
Wind10.9 mph S
Humidity79%
Visibility—
Dew point53°
Tue, 2763° / 49°0
63 °
Penn, Tuesday, 27 October
Light rain. High 63°, low 49°.
Pressure30.21 inHg
Wind3.5 mph N
Humidity72%
Visibility—
Dew point47°
Wed, 2857° / 53°1
57 °
Penn, Wednesday, 28 October
Rain. High 57°, low 53°.
Pressure29.97 inHg
Wind6.5 mph E
Humidity98%
Visibility—
Dew point53°
Thu, 2959° / 50°0.07
59 °
Penn, Thursday, 29 October
Light rain. High 59°, low 50°.
Pressure29.71 inHg
Wind14.7 mph NW
Humidity94%
Visibility—
Dew point57°
Fri, 3059° / 49°0
59 °
Penn, Friday, 30 October
Overcast. High 59°, low 49°.
Pressure30.15 inHg
Wind13.5 mph NW
Humidity56%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 0951° / 36°0.08
51 °
Penn, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.08 in
Chance of precipitation30%
Record high72° (2020)
Record low22° (1976)
Tue, 1050° / 36°0.15
50 °
Penn, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low36°
Average precipitation0.15 in
Chance of precipitation38%
Record high72° (2020)
Record low22° (2017)
Wed, 1149° / 36°0.13
49 °
Penn, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.13 in
Chance of precipitation30%
Record high67° (2006)
Record low19° (2017)
Thu, 1248° / 34°0.17
48 °
Penn, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.17 in
Chance of precipitation42%
Record high66° (1964)
Record low22° (2019)
Fri, 1347° / 33°0.06
47 °
Penn, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high64° (1964)
Record low18° (2019)
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.