As of 08:31 EDT

Weather in Arnold, PA

45°

Arnold, Wednesday, 7 October, 08:31

Clear. Feels like 42°. High 74°, low 42°.

Pressure30.00 inHg

Wind5.3 mph S

Humidity69%

Visibility6.2 mi

Dew point35°

See detailed hourly forecast

Monthly outlook for Arnold, PA: average high 61.4°, average low 43.4°. That is 0.7° below the climate normal for October. Precipitation is expected on 6 days (about 2.8 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 7 October (73.7°), the coolest 19 October (33.7°).

61.4°/43.4°

Average high / low

−0.7°

Below normal

6 / 6

Wet days / normal

2.8 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
7 October – 16 October	65.9°	64.4°	+0.8°
17 October – 26 October	53.8°	59.5°	-3.2°
27 October – 5 November	at normal	57°	—

October records over 66 years

87.1°8 October 2007All-time high

25.3°20 October 1972All-time low

Thu, 0871° / 49°

71 °

Arnold, Thursday, 8 October

Clear. High 71°, low 49°.

Pressure29.97 inHg

Wind9.9 mph W

Humidity48%

Visibility6.2 mi

Dew point46°

Fri, 0966° / 46°

66 °

Arnold, Friday, 9 October

Clear. High 66°, low 46°.

Pressure30.27 inHg

Wind5.6 mph NW

Humidity48%

Visibility6.2 mi

Dew point43°

Sat, 1073° / 49°

73 °

Arnold, Saturday, 10 October

Overcast. High 73°, low 49°.

Pressure30.36 inHg

Wind7 mph SE

Humidity45%

Visibility6.2 mi

Dew point47°

Sun, 1163° / 59°

0.43

63 °

Arnold, Sunday, 11 October

Rain. High 63°, low 59°.

Pressure30.06 inHg

Wind11.9 mph E

Humidity97%

Visibility—

Dew point60°

Mon, 1270° / 58°

0.09

70 °

Arnold, Monday, 12 October

Light rain. High 70°, low 58°.

Pressure29.80 inHg

Wind9.4 mph NW

Humidity82%

Visibility—

Dew point62°

Tue, 1356° / 43°

0.65

56 °

Arnold, Tuesday, 13 October

Rain. High 56°, low 43°.

Pressure29.83 inHg

Wind9.1 mph NE

Humidity95%

Visibility—

Dew point48°

Wed, 1455° / 39°

55 °

Arnold, Wednesday, 14 October

Clear. High 55°, low 39°.

Pressure30.24 inHg

Wind8.7 mph N

Humidity45%

Visibility—

Dew point31°

Thu, 1564° / 38°

64 °

Arnold, Thursday, 15 October

Overcast. High 64°, low 38°.

Pressure30.15 inHg

Wind8.4 mph SE

Humidity34%

Visibility—

Dew point31°

Fri, 1669° / 48°

0.42

69 °

Arnold, Friday, 16 October

Rain. High 69°, low 48°.

Pressure29.91 inHg

Wind6.9 mph SE

Humidity58%

Visibility—

Dew point51°

Sat, 1755° / 43°

1.18

55 °

Arnold, Saturday, 17 October

Rain. High 55°, low 43°.

Pressure29.85 inHg

Wind13.1 mph W

Humidity97%

Visibility—

Dew point47°

Sun, 1847° / 37°

0.08

47 °

Arnold, Sunday, 18 October

Light rain. High 47°, low 37°.

Pressure30.06 inHg

Wind14 mph W

Humidity65%

Visibility—

Dew point35°

Mon, 1953° / 34°

53 °

Arnold, Monday, 19 October

Clear. High 53°, low 34°.

Pressure30.33 inHg

Wind9 mph W

Humidity42%

Visibility—

Dew point28°

Tue, 2057° / 36°

57 °

Arnold, Tuesday, 20 October

Mostly clear. High 57°, low 36°.

Pressure30.39 inHg

Wind8.1 mph NW

Humidity55%

Visibility—

Dew point38°

Wed, 2155° / 35°

55 °

Arnold, Wednesday, 21 October

Clear. High 55°, low 35°.

Pressure30.30 inHg

Wind6.2 mph W

Humidity49%

Visibility—

Dew point33°

Thu, 2257° / 41°

57 °

Arnold, Thursday, 22 October

Overcast. High 57°, low 41°.

Pressure29.97 inHg

Wind6.1 mph W

Humidity49%

Visibility—

Dew point36°

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

Fri, 2360° / 44°

0.11

60 °

Arnold, Friday, 23 October

Climate normal for this date — 60-year average.

Average high60°

Average low44°

Average precipitation0.11 in

Chance of precipitation30%

Record high78° (1963)

Record low29° (1969)

Sat, 2459° / 44°

0.12

59 °

Arnold, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.12 in

Chance of precipitation43%

Record high80° (1963)

Record low27° (1969)

Sun, 2559° / 44°

0.14

59 °

Arnold, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.14 in

Chance of precipitation32%

Record high80° (1963)

Record low31° (2018)

Mon, 2658° / 44°

0.1

58 °

Arnold, Monday, 26 October

Climate normal for this date — 60-year average.

Average high58°

Average low44°

Average precipitation0.1 in

Chance of precipitation32%

Record high80° (1963)

Record low29° (1962)

Tue, 2758° / 43°

0.12

58 °

Arnold, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high58°

Average low43°

Average precipitation0.12 in

Chance of precipitation33%

Record high79° (1963)

Record low28° (1976)

Wed, 2857° / 43°

0.12

57 °

Arnold, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high57°

Average low43°

Average precipitation0.12 in

Chance of precipitation37%

Record high74° (2014)

Record low26° (1976)

Thu, 2956° / 41°

0.17

56 °

Arnold, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high56°

Average low41°

Average precipitation0.17 in

Chance of precipitation35%

Record high73° (2024)

Record low26° (1965)

Fri, 3057° / 41°

0.13

57 °

Arnold, Friday, 30 October

Climate normal for this date — 60-year average.

Average high57°

Average low41°

Average precipitation0.13 in

Chance of precipitation28%

Record high74° (2024)

Record low30° (2008)

Sat, 3158° / 42°

0.12

58 °

Arnold, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high58°

Average low42°

Average precipitation0.12 in

Chance of precipitation30%

Record high78° (2024)

Record low28° (1988)

Sun, 0158° / 43°

0.11

58 °

Arnold, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high58°

Average low43°

Average precipitation0.11 in

Chance of precipitation45%

Record high74° (1974)

Record low29° (2023)

Mon, 0258° / 43°

0.14

58 °

Arnold, Monday, 2 November

Climate normal for this date — 60-year average.

Average high58°

Average low43°

Average precipitation0.14 in

Chance of precipitation42%

Record high76° (1982)

Record low24° (1993)

Tue, 0356° / 41°

0.08

56 °

Arnold, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high56°

Average low41°

Average precipitation0.08 in

Chance of precipitation38%

Record high78° (1961)

Record low29° (1966)

Wed, 0455° / 40°

0.12

55 °

Arnold, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.12 in

Chance of precipitation32%

Record high76° (2003)

Record low25° (1991)

Thu, 0555° / 41°

0.11

55 °

Arnold, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high55°

Average low41°

Average precipitation0.11 in

Chance of precipitation40%

Record high78° (2024)

Record low21° (1991)

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 Arnold, 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 Arnold, 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.