As of 07:11 EDT

Weather in Union, PA

45°

Union, Friday, 9 October, 07:11

Clear. Feels like 43°. High 70°, low 45°.

Pressure30.15 inHg

Wind4.4 mph W

Humidity90%

Visibility6.2 mi

Dew point42°

See detailed hourly forecast

Monthly outlook for Union, PA: average high 62.8°, average low 45.1°. That is 0.6° below the climate normal for October. Precipitation is expected on 6 days (about 3.8 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (72.9°), the coolest 21 October (37.8°).

62.8°/45.1°

Average high / low

−0.6°

Below normal

6 / 4

Wet days / normal

3.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 October – 18 October	65.5°	65°	+0.3°
19 October – 28 October	58.5°	61.3°	-1.6°
29 October – 7 November	at normal	58.2°	—

October records over 66 years

92.5°2 October 2019All-time high

27.7°24 October 1969All-time low

Climate normals and records are computed from the nearest reference point — Pottstown (7 mi).

Sat, 1070° / 45°

70 °

Union, Saturday, 10 October

Overcast. High 70°, low 45°.

Pressure30.47 inHg

Wind6.5 mph E

Humidity41%

Visibility6.2 mi

Dew point43°

Sun, 1160° / 54°

1.28

60 °

Union, Sunday, 11 October

Heavy rain. High 60°, low 54°.

Pressure30.24 inHg

Wind11.5 mph E

Humidity98%

Visibility1.6 mi

Dew point56°

Mon, 1271° / 56°

1.25

71 °

Union, Monday, 12 October

Heavy rain. High 71°, low 56°.

Pressure29.74 inHg

Wind11.8 mph NW

Humidity73%

Visibility6.2 mi

Dew point59°

Tue, 1373° / 55°

0.3

73 °

Union, Tuesday, 13 October

Rain. High 73°, low 55°.

Pressure29.85 inHg

Wind7.7 mph SW

Humidity70%

Visibility—

Dew point57°

Wed, 1469° / 49°

0.02

69 °

Union, Wednesday, 14 October

Light rain. High 69°, low 49°.

Pressure29.97 inHg

Wind8.1 mph NW

Humidity75%

Visibility—

Dew point55°

Thu, 1558° / 39°

58 °

Union, Thursday, 15 October

Overcast. High 58°, low 39°.

Pressure30.27 inHg

Wind6.1 mph SE

Humidity58%

Visibility—

Dew point35°

Fri, 1668° / 51°

0.07

68 °

Union, Friday, 16 October

Light rain. High 68°, low 51°.

Pressure30.12 inHg

Wind13.6 mph S

Humidity82%

Visibility—

Dew point53°

Sat, 1761° / 47°

0.17

61 °

Union, Saturday, 17 October

Light rain. High 61°, low 47°.

Pressure30.09 inHg

Wind8.8 mph NW

Humidity62%

Visibility—

Dew point41°

Sun, 1855° / 42°

0.69

55 °

Union, Sunday, 18 October

Rain. High 55°, low 42°.

Pressure30.24 inHg

Wind10.5 mph N

Humidity74%

Visibility—

Dew point42°

Mon, 1955° / 39°

55 °

Union, Monday, 19 October

Overcast. High 55°, low 39°.

Pressure30.42 inHg

Wind7.7 mph NE

Humidity66%

Visibility—

Dew point38°

Tue, 2057° / 39°

57 °

Union, Tuesday, 20 October

Overcast. High 57°, low 39°.

Pressure30.45 inHg

Wind11.2 mph NE

Humidity59%

Visibility—

Dew point35°

Wed, 2158° / 38°

58 °

Union, Wednesday, 21 October

Partly cloudy. High 58°, low 38°.

Pressure30.47 inHg

Wind13.4 mph E

Humidity65%

Visibility—

Dew point38°

Thu, 2259° / 39°

59 °

Union, Thursday, 22 October

Overcast. High 59°, low 39°.

Pressure30.36 inHg

Wind7.3 mph NE

Humidity70%

Visibility—

Dew point41°

Fri, 2362° / 41°

62 °

Union, Friday, 23 October

Clear. High 62°, low 41°.

Pressure30.24 inHg

Wind9.5 mph E

Humidity57%

Visibility—

Dew point39°

Sat, 2461° / 41°

61 °

Union, Saturday, 24 October

Overcast. High 61°, low 41°.

Pressure30.18 inHg

Wind8.3 mph E

Humidity63%

Visibility—

Dew point41°

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

Sun, 2561° / 46°

0.12

61 °

Union, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high61°

Average low46°

Average precipitation0.12 in

Chance of precipitation32%

Record high76° (2021)

Record low33° (1962)

Mon, 2660° / 46°

0.1

60 °

Union, Monday, 26 October

Climate normal for this date — 60-year average.

Average high60°

Average low46°

Average precipitation0.1 in

Chance of precipitation32%

Record high78° (2023)

Record low33° (2018)

Tue, 2760° / 45°

0.21

60 °

Union, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.21 in

Chance of precipitation30%

Record high81° (1963)

Record low31° (1976)

Wed, 2860° / 45°

0.14

60 °

Union, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.14 in

Chance of precipitation23%

Record high79° (2023)

Record low29° (1976)

Thu, 2958° / 43°

0.24

58 °

Union, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high58°

Average low43°

Average precipitation0.24 in

Chance of precipitation25%

Record high75° (1984)

Record low31° (1965)

Fri, 3058° / 42°

0.1

58 °

Union, Friday, 30 October

Climate normal for this date — 60-year average.

Average high58°

Average low42°

Average precipitation0.1 in

Chance of precipitation23%

Record high78° (2016)

Record low31° (2011)

Sat, 3159° / 43°

0.05

59 °

Union, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high59°

Average low43°

Average precipitation0.05 in

Chance of precipitation18%

Record high82° (2024)

Record low29° (2011)

Sun, 0160° / 45°

0.08

60 °

Union, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.08 in

Chance of precipitation25%

Record high78° (1974)

Record low33° (2002)

Mon, 0260° / 45°

0.1

60 °

Union, Monday, 2 November

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.1 in

Chance of precipitation30%

Record high77° (1971)

Record low30° (2023)

Tue, 0360° / 44°

0.07

60 °

Union, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high60°

Average low44°

Average precipitation0.07 in

Chance of precipitation23%

Record high77° (2003)

Record low31° (1980)

Wed, 0458° / 42°

0.07

58 °

Union, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high58°

Average low42°

Average precipitation0.07 in

Chance of precipitation18%

Record high74° (1987)

Record low30° (2021)

Thu, 0557° / 42°

0.11

57 °

Union, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.11 in

Chance of precipitation28%

Record high76° (2022)

Record low28° (1991)

Fri, 0656° / 42°

0.07

56 °

Union, Friday, 6 November

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.07 in

Chance of precipitation28%

Record high81° (2024)

Record low28° (1991)

Sat, 0756° / 41°

0.07

56 °

Union, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high56°

Average low41°

Average precipitation0.07 in

Chance of precipitation23%

Record high74° (2024)

Record low27° (1962)

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 Union, 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 Union, 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.