As of 04:00 EDT

Weather in Chester, PA

56°

Chester, Monday, 12 October, 04:00

Rain. Feels like 56°. High 73°, low 55°.

Pressure29.71 inHg

Wind12.7 mph NE

Humidity96%

Visibility1.9 mi

Dew point55°

See detailed hourly forecast

Monthly outlook for Chester, PA: average high 63.9°, average low 49.6°. That is 0° above the climate normal for October. Precipitation is expected on 3 days (about 2.4 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 16 October (79.9°), the coolest 18 October (36.4°).

63.9°/49.6°

Average high / low

+0°

Above normal

3 / 4

Wet days / normal

2.4 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
12 October – 21 October	68°	64.9°	+1.7°
22 October – 31 October	57.1°	61.3°	-2.3°
1 November – 10 November	at normal	58.6°	—

October records over 66 years

92.3°2 October 2019All-time high

27.3°24 October 1969All-time low

Tue, 1377° / 55°

77 °

Chester, Tuesday, 13 October

Clear. High 77°, low 55°.

Pressure29.94 inHg

Wind6.3 mph S

Humidity67%

Visibility6.2 mi

Dew point62°

Wed, 1479° / 65°

79 °

Chester, Wednesday, 14 October

Overcast. High 79°, low 65°.

Pressure29.91 inHg

Wind11.7 mph NW

Humidity66%

Visibility6.2 mi

Dew point65°

Thu, 1567° / 56°

0.02

67 °

Chester, Thursday, 15 October

Light rain. High 67°, low 56°.

Pressure30.21 inHg

Wind4.9 mph NE

Humidity65%

Visibility6.2 mi

Dew point52°

Fri, 1680° / 55°

0.37

80 °

Chester, Friday, 16 October

Rain. High 80°, low 55°.

Pressure29.65 inHg

Wind18.8 mph NW

Humidity89%

Visibility—

Dew point66°

Sat, 1752° / 40°

52 °

Chester, Saturday, 17 October

Clear. High 52°, low 40°.

Pressure30.27 inHg

Wind16.9 mph NW

Humidity51%

Visibility—

Dew point31°

Sun, 1853° / 36°

53 °

Chester, Sunday, 18 October

Mostly clear. High 53°, low 36°.

Pressure30.71 inHg

Wind8.4 mph SW

Humidity33%

Visibility—

Dew point18°

Mon, 1962° / 42°

62 °

Chester, Monday, 19 October

Clear. High 62°, low 42°.

Pressure30.56 inHg

Wind8.5 mph SW

Humidity44%

Visibility—

Dew point32°

Tue, 2069° / 50°

69 °

Chester, Tuesday, 20 October

Partly cloudy. High 69°, low 50°.

Pressure30.39 inHg

Wind4.5 mph NW

Humidity46%

Visibility—

Dew point39°

Wed, 2169° / 54°

69 °

Chester, Wednesday, 21 October

Overcast. High 69°, low 54°.

Pressure30.39 inHg

Wind5.8 mph SE

Humidity53%

Visibility—

Dew point45°

Thu, 2270° / 54°

70 °

Chester, Thursday, 22 October

Clear. High 70°, low 54°.

Pressure30.30 inHg

Wind12 mph S

Humidity66%

Visibility—

Dew point52°

Fri, 2364° / 50°

1.28

64 °

Chester, Friday, 23 October

Heavy rain. High 64°, low 50°.

Pressure29.71 inHg

Wind13.1 mph SE

Humidity94%

Visibility—

Dew point61°

Sat, 2455° / 47°

55 °

Chester, Saturday, 24 October

Partly cloudy. High 55°, low 47°.

Pressure29.56 inHg

Wind19.4 mph NW

Humidity60%

Visibility—

Dew point39°

Sun, 2551° / 44°

51 °

Chester, Sunday, 25 October

Overcast. High 51°, low 44°.

Pressure29.56 inHg

Wind18.7 mph NW

Humidity57%

Visibility—

Dew point32°

Mon, 2650° / 45°

0.03

50 °

Chester, Monday, 26 October

Light rain. High 50°, low 45°.

Pressure29.77 inHg

Wind10.6 mph NW

Humidity67%

Visibility—

Dew point39°

Tue, 2753° / 45°

53 °

Chester, Tuesday, 27 October

Overcast. High 53°, low 45°.

Pressure29.85 inHg

Wind12.1 mph NW

Humidity54%

Visibility—

Dew point35°

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

Wed, 2861° / 46°

0.13

61 °

Chester, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high61°

Average low46°

Average precipitation0.13 in

Chance of precipitation23%

Record high83° (2023)

Record low30° (1976)

Thu, 2959° / 45°

0.26

59 °

Chester, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high59°

Average low45°

Average precipitation0.26 in

Chance of precipitation25%

Record high77° (1984)

Record low32° (1965)

Fri, 3060° / 44°

0.09

60 °

Chester, Friday, 30 October

Climate normal for this date — 60-year average.

Average high60°

Average low44°

Average precipitation0.09 in

Chance of precipitation23%

Record high77° (2016)

Record low32° (1962)

Sat, 3160° / 45°

0.06

60 °

Chester, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.06 in

Chance of precipitation18%

Record high79° (2024)

Record low31° (1988)

Sun, 0162° / 47°

0.08

62 °

Chester, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high62°

Average low47°

Average precipitation0.08 in

Chance of precipitation23%

Record high79° (2024)

Record low34° (2002)

Mon, 0261° / 47°

0.08

61 °

Chester, Monday, 2 November

Climate normal for this date — 60-year average.

Average high61°

Average low47°

Average precipitation0.08 in

Chance of precipitation32%

Record high76° (1971)

Record low31° (2023)

Tue, 0361° / 45°

0.08

61 °

Chester, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high61°

Average low45°

Average precipitation0.08 in

Chance of precipitation23%

Record high76° (2003)

Record low32° (1980)

Wed, 0459° / 44°

0.08

59 °

Chester, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.08 in

Chance of precipitation18%

Record high76° (1974)

Record low32° (1996)

Thu, 0558° / 44°

0.11

58 °

Chester, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high58°

Average low44°

Average precipitation0.11 in

Chance of precipitation30%

Record high76° (2022)

Record low30° (1991)

Fri, 0657° / 44°

0.08

57 °

Chester, Friday, 6 November

Climate normal for this date — 60-year average.

Average high57°

Average low44°

Average precipitation0.08 in

Chance of precipitation25%

Record high78° (2024)

Record low28° (1967)

Sat, 0757° / 43°

0.1

57 °

Chester, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high57°

Average low43°

Average precipitation0.1 in

Chance of precipitation22%

Record high77° (2024)

Record low28° (1962)

Sun, 0857° / 42°

0.1

57 °

Chester, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.1 in

Chance of precipitation28%

Record high73° (1975)

Record low27° (1960)

Mon, 0957° / 42°

0.08

57 °

Chester, Monday, 9 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.08 in

Chance of precipitation28%

Record high75° (1975)

Record low25° (2019)

Tue, 1057° / 42°

0.15

57 °

Chester, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.15 in

Chance of precipitation35%

Record high73° (2020)

Record low28° (2017)

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 Chester, 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 Chester, 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.