As of 21:18 EDT

Weather in Penn, PA

55°

Penn, Thursday, 8 October, 21:18

Clear. Feels like 54°. High 74°, low 53°.

Pressure30.03 inHg

Wind5.8 mph W

Humidity71%

Visibility6.2 mi

Dew point45°

See detailed hourly forecast

Monthly outlook for Penn, PA: average high 66.8°, average low 45.7°. That is 1.6° above the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 16 October (79.3°), the coolest 19 October (30.6°).

66.8°/45.7°

Average high / low

+1.6°

Above normal

2 / 4

Wet days / normal

0.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 October – 17 October	71.4°	65.2°	+3.5°
18 October – 27 October	59.2°	61.2°	-1.1°
28 October – 6 November	at normal	58.3°	—

October records over 66 years

89.1°2 October 2019All-time high

27.9°28 October 1976All-time low

Climate normals and records are computed from the nearest reference point — Harrisburg (11 mi).

Fri, 0973° / 42°

73 °

Penn, Friday, 9 October

Clear. High 73°, low 42°.

Pressure30.21 inHg

Wind8.1 mph NW

Humidity42%

Visibility6.2 mi

Dew point43°

Sat, 1073° / 43°

73 °

Penn, Saturday, 10 October

Overcast. High 73°, low 43°.

Pressure30.45 inHg

Wind6.4 mph SE

Humidity40%

Visibility6.2 mi

Dew point43°

Sun, 1161° / 55°

0.31

61 °

Penn, Sunday, 11 October

Rain. High 61°, low 55°.

Pressure30.21 inHg

Wind11.8 mph SE

Humidity86%

Visibility5.0 mi

Dew point57°

Mon, 1273° / 57°

0.21

73 °

Penn, Monday, 12 October

Light rain. High 73°, low 57°.

Pressure29.80 inHg

Wind8.6 mph NW

Humidity73%

Visibility6.2 mi

Dew point60°

Tue, 1379° / 58°

0.01

79 °

Penn, Tuesday, 13 October

Light rain. High 79°, low 58°.

Pressure29.83 inHg

Wind8.2 mph S

Humidity66%

Visibility—

Dew point58°

Wed, 1469° / 50°

0.01

69 °

Penn, Wednesday, 14 October

Light rain. High 69°, low 50°.

Pressure29.94 inHg

Wind8.9 mph NW

Humidity74%

Visibility—

Dew point55°

Thu, 1566° / 47°

66 °

Penn, Thursday, 15 October

Partly cloudy. High 66°, low 47°.

Pressure30.21 inHg

Wind5.5 mph SE

Humidity58%

Visibility—

Dew point43°

Fri, 1679° / 53°

79 °

Penn, Friday, 16 October

Clear. High 79°, low 53°.

Pressure30.15 inHg

Wind7.5 mph S

Humidity68%

Visibility—

Dew point53°

Sat, 1766° / 44°

0.02

66 °

Penn, Saturday, 17 October

Light rain. High 66°, low 44°.

Pressure30.15 inHg

Wind14.4 mph NW

Humidity54%

Visibility—

Dew point40°

Sun, 1851° / 35°

51 °

Penn, Sunday, 18 October

Clear. High 51°, low 35°.

Pressure30.45 inHg

Wind10.7 mph N

Humidity37%

Visibility—

Dew point20°

Mon, 1953° / 31°

53 °

Penn, Monday, 19 October

Clear. High 53°, low 31°.

Pressure30.65 inHg

Wind3.4 mph W

Humidity36%

Visibility—

Dew point19°

Tue, 2061° / 35°

61 °

Penn, Tuesday, 20 October

Clear. High 61°, low 35°.

Pressure30.47 inHg

Wind2.9 mph NW

Humidity40%

Visibility—

Dew point26°

Wed, 2162° / 40°

62 °

Penn, Wednesday, 21 October

Clear. High 62°, low 40°.

Pressure30.39 inHg

Wind6.3 mph S

Humidity45%

Visibility—

Dew point32°

Thu, 2263° / 41°

0.01

63 °

Penn, Thursday, 22 October

Light rain. High 63°, low 41°.

Pressure30.24 inHg

Wind4.5 mph SW

Humidity50%

Visibility—

Dew point35°

Fri, 2365° / 47°

65 °

Penn, Friday, 23 October

Mostly clear. High 65°, low 47°.

Pressure30.18 inHg

Wind6.8 mph NW

Humidity69%

Visibility—

Dew point48°

From day 17 onward the outlook is built from 60-year climate statistics

Sat, 2461° / 46°

0.11

61 °

Penn, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high61°

Average low46°

Average precipitation0.11 in

Chance of precipitation32%

Record high79° (2001)

Record low29° (1969)

Sun, 2560° / 46°

0.15

60 °

Penn, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high60°

Average low46°

Average precipitation0.15 in

Chance of precipitation30%

Record high77° (2021)

Record low35° (1969)

Mon, 2660° / 45°

0.1

60 °

Penn, Monday, 26 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.1 in

Chance of precipitation32%

Record high78° (1963)

Record low32° (1962)

Tue, 2760° / 45°

0.17

60 °

Penn, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.17 in

Chance of precipitation28%

Record high80° (1963)

Record low31° (1976)

Wed, 2860° / 45°

0.1

60 °

Penn, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.1 in

Chance of precipitation27%

Record high79° (2014)

Record low28° (1976)

Thu, 2958° / 43°

0.19

58 °

Penn, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high58°

Average low43°

Average precipitation0.19 in

Chance of precipitation25%

Record high73° (1971)

Record low30° (1965)

Fri, 3058° / 42°

0.12

58 °

Penn, Friday, 30 October

Climate normal for this date — 60-year average.

Average high58°

Average low42°

Average precipitation0.12 in

Chance of precipitation25%

Record high77° (2024)

Record low30° (2011)

Sat, 3159° / 43°

0.07

59 °

Penn, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high59°

Average low43°

Average precipitation0.07 in

Chance of precipitation27%

Record high81° (2024)

Record low29° (2011)

Sun, 0160° / 45°

0.06

60 °

Penn, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.06 in

Chance of precipitation23%

Record high78° (1974)

Record low31° (2002)

Mon, 0260° / 45°

0.14

60 °

Penn, Monday, 2 November

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.14 in

Chance of precipitation30%

Record high78° (1982)

Record low30° (2002)

Tue, 0359° / 43°

0.07

59 °

Penn, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high59°

Average low43°

Average precipitation0.07 in

Chance of precipitation28%

Record high77° (2003)

Record low30° (2002)

Wed, 0457° / 42°

0.08

57 °

Penn, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.08 in

Chance of precipitation23%

Record high75° (1994)

Record low29° (2006)

Thu, 0557° / 42°

0.11

57 °

Penn, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.11 in

Chance of precipitation27%

Record high76° (2022)

Record low27° (1991)

Fri, 0656° / 42°

0.06

56 °

Penn, Friday, 6 November

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.06 in

Chance of precipitation32%

Record high80° (2024)

Record low28° (1967)

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.