As of 23:15 EDT

Weather in Penn, PA

71°

Penn, Wednesday, 14 October, 23:15

Light rain. Feels like 71°. High 82°, low 64°.

Pressure30.00 inHg

Wind3.4 mph N

Humidity84%

Visibility6.2 mi

Dew point66°

See detailed hourly forecast

Monthly outlook for Penn, PA: average high 66.8°, average low 50.1°. That is 2.8° above the climate normal for October. Precipitation is expected on 3 days (about 1.3 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 16 October (82.2°), the coolest 18 October (40°).

66.8°/50.1°

Average high / low

+2.8°

Above normal

3 / 4

Wet days / normal

1.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
14 October – 23 October	67.6°	62.9°	+2.6°
24 October – 2 November	65.4°	59.6°	+3.2°
3 November – 12 November	at normal	55.6°	—

October records over 66 years

88.5°2 October 2019All-time high

24.4°31 October 2011All-time low

Climate normals and records are computed from the nearest reference point — McSherrystown (3 mi).

Thu, 1571° / 55°

71 °

Penn, Thursday, 15 October

Overcast. High 71°, low 55°.

Pressure30.21 inHg

Wind5 mph NE

Humidity68%

Visibility6.2 mi

Dew point50°

Fri, 1682° / 56°

0.02

82 °

Penn, Friday, 16 October

Light rain. High 82°, low 56°.

Pressure29.77 inHg

Wind12.5 mph S

Humidity77%

Visibility6.2 mi

Dew point67°

Sat, 1761° / 45°

0.02

61 °

Penn, Saturday, 17 October

Light rain. High 61°, low 45°.

Pressure30.21 inHg

Wind16.6 mph N

Humidity47%

Visibility6.2 mi

Dew point34°

Sun, 1857° / 40°

57 °

Penn, Sunday, 18 October

Clear. High 57°, low 40°.

Pressure30.62 inHg

Wind0.1 mph N

Humidity53%

Visibility6.2 mi

Dew point35°

Mon, 1962° / 40°

62 °

Penn, Monday, 19 October

Clear. High 62°, low 40°.

Pressure30.53 inHg

Wind3.1 mph S

Humidity61%

Visibility—

Dew point40°

Tue, 2066° / 42°

66 °

Penn, Tuesday, 20 October

Partly cloudy. High 66°, low 42°.

Pressure30.33 inHg

Wind5 mph N

Humidity59%

Visibility—

Dew point42°

Wed, 2165° / 47°

65 °

Penn, Wednesday, 21 October

Clear. High 65°, low 47°.

Pressure30.42 inHg

Wind5.8 mph N

Humidity64%

Visibility—

Dew point46°

Thu, 2264° / 47°

64 °

Penn, Thursday, 22 October

Clear. High 64°, low 47°.

Pressure30.47 inHg

Wind6.1 mph SE

Humidity74%

Visibility—

Dew point49°

Fri, 2366° / 48°

66 °

Penn, Friday, 23 October

Clear. High 66°, low 48°.

Pressure30.42 inHg

Wind6.5 mph SW

Humidity76%

Visibility—

Dew point50°

Sat, 2469° / 50°

69 °

Penn, Saturday, 24 October

Overcast. High 69°, low 50°.

Pressure30.45 inHg

Wind6.9 mph SE

Humidity67%

Visibility—

Dew point50°

Sun, 2568° / 50°

68 °

Penn, Sunday, 25 October

Clear. High 68°, low 50°.

Pressure30.42 inHg

Wind10.5 mph S

Humidity70%

Visibility—

Dew point51°

Mon, 2665° / 55°

0.03

65 °

Penn, Monday, 26 October

Light rain. High 65°, low 55°.

Pressure30.15 inHg

Wind15.6 mph S

Humidity88%

Visibility—

Dew point60°

Tue, 2763° / 55°

0.09

63 °

Penn, Tuesday, 27 October

Light rain. High 63°, low 55°.

Pressure30.18 inHg

Wind10 mph N

Humidity81%

Visibility—

Dew point50°

Wed, 2860° / 55°

0.75

60 °

Penn, Wednesday, 28 October

Rain. High 60°, low 55°.

Pressure29.97 inHg

Wind13 mph E

Humidity97%

Visibility—

Dew point57°

Thu, 2967° / 52°

0.36

67 °

Penn, Thursday, 29 October

Rain. High 67°, low 52°.

Pressure29.68 inHg

Wind18.4 mph NW

Humidity83%

Visibility—

Dew point58°

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

Fri, 3058° / 42°

0.11

58 °

Penn, Friday, 30 October

Climate normal for this date — 60-year average.

Average high58°

Average low42°

Average precipitation0.11 in

Chance of precipitation25%

Record high78° (2016)

Record low28° (2011)

Sat, 3159° / 44°

0.06

59 °

Penn, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.06 in

Chance of precipitation22%

Record high78° (2024)

Record low24° (2011)

Sun, 0160° / 46°

0.06

60 °

Penn, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high60°

Average low46°

Average precipitation0.06 in

Chance of precipitation23%

Record high78° (1974)

Record low34° (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 precipitation37%

Record high78° (1971)

Record low31° (1976)

Tue, 0359° / 44°

0.07

59 °

Penn, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.07 in

Chance of precipitation27%

Record high77° (2003)

Record low31° (1996)

Wed, 0457° / 42°

0.09

57 °

Penn, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.09 in

Chance of precipitation22%

Record high76° (2003)

Record low28° (1962)

Thu, 0557° / 43°

0.11

57 °

Penn, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high57°

Average low43°

Average precipitation0.11 in

Chance of precipitation33%

Record high76° (1961)

Record low26° (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 precipitation30%

Record high80° (2024)

Record low27° (1967)

Sat, 0755° / 41°

0.07

55 °

Penn, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high55°

Average low41°

Average precipitation0.07 in

Chance of precipitation22%

Record high72° (2023)

Record low27° (1962)

Sun, 0855° / 40°

0.17

55 °

Penn, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.17 in

Chance of precipitation20%

Record high74° (1975)

Record low26° (1960)

Mon, 0955° / 40°

0.06

55 °

Penn, Monday, 9 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.06 in

Chance of precipitation32%

Record high74° (1975)

Record low26° (2019)

Tue, 1055° / 41°

0.15

55 °

Penn, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high55°

Average low41°

Average precipitation0.15 in

Chance of precipitation33%

Record high73° (2020)

Record low26° (2017)

Wed, 1154° / 40°

0.15

54 °

Penn, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high54°

Average low40°

Average precipitation0.15 in

Chance of precipitation27%

Record high71° (2006)

Record low19° (2017)

Thu, 1252° / 39°

0.19

52 °

Penn, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high52°

Average low39°

Average precipitation0.19 in

Chance of precipitation38%

Record high71° (1964)

Record low26° (1987)

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.