October weather forecast
Castle Shannon, PA

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Weather in October

October, like September, in Castle Shannon, Pennsylvania, is another enjoyable autumn month, with an average temperature varying between 45.5°F (7.5°C) and 62.1°F (16.7°C).

Temperature

The onset of October comes with a shift in the average high-temperature, falling from a warm 75.7°F (24.3°C) in September to an enjoyable 62.1°F (16.7°C). Throughout October nights, Castle Shannon experiences a consistent temperature average of 45.5°F (7.5°C).

Humidity

In Castle Shannon, the average relative humidity in October is 78%.

Rainfall

In Castle Shannon, in October, it is raining for 14.3 days, with typically 2.2" (56mm) of accumulated precipitation. In Castle Shannon, during the entire year, the rain falls for 164 days and collects up to 26.89" (683mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.3 snowfall days, it receives 0.16" (4mm) of snow. In Castle Shannon, during the entire year, snow falls for 53.3 days and aggregates up to 13.27" (337mm) of snow.

Daylight

The average length of the day in October is 11h and 7min.
On the first day of the month, sunrise is at 7:17 am and sunset at 7:01 pm. On the last day of October, in Castle Shannon, sunrise is at 7:49 am and sunset at 6:17 pm EDT.

Sunshine

In Castle Shannon, the average sunshine in October is 5.2h.

UV index

In October, the average daily maximum UV index in Castle Shannon is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 2 in October converts into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. The Sun's radiation is especially intense around midday; try to stay in shade during this period. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
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Frequently asked questions

What are the temperatures in Castle Shannon in October?

In Castle Shannon, in October, the average high-temperature is 62.1°F (16.7°C), and the average low-temperature is 45.5°F (7.5°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 87.8°F (31°C).

What is the average humidity in October in Castle Shannon?

In October, the average relative humidity is 78%.

How much does it rain in Castle Shannon in October?

In Castle Shannon, Pennsylvania, in October, during 14.3 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

When does it start to snow in Castle Shannon?

October is the first month it typically snows. Throughout October, in the average 0.3 snowfall days, it receives 0.16" (4mm) of snow.

What is the average length of the day in October in Castle Shannon?

In October, the average day length in Castle Shannon is 11h and 7min.

When are sunrise and sunset in October in Castle Shannon?

In October, on the first day of the month, sunrise is at 7:17 am and sunset at 7:01 pm. On the last day of the month, in Castle Shannon, Pennsylvania, sunrise is at 7:49 am and sunset at 6:17 pm EDT.

How long on average sun shines in October in Castle Shannon?

In Castle Shannon, the average sunshine duration in October is 5.2h.

What is the UV index reading in October in Castle Shannon?

In October, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Castle Shannon, PA

Average temperature in October - Castle Shannon, PA
  • Average high temperature in October: 62.1°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in October: 45.5°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

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Average pressure in October
Castle Shannon, PA

Average pressure in October - Castle Shannon, PA
  • Average pressure in October: 30.03"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in October
Castle Shannon, PA

Average wind speed in October - Castle Shannon, PA
  • Average wind speed in October: 6.3mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in October
Castle Shannon, PA

Average humidity in October - Castle Shannon, PA
  • Average humidity in October: 78%

The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (73%).

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Average rainfall in October
Castle Shannon, PA

Average rainfall in October - Castle Shannon, PA
  • Average rainfall in October: 2.2"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is November (1.61").

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Average rainfall days in October
Castle Shannon, PA

Average rainfall days in October - Castle Shannon, PA
  • Average rainfall days in October: 14.3 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (8.5 days).

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Average snowfall in October
Castle Shannon, PA

Average snowfall in October - Castle Shannon, PA
  • Average snowfall in October: 0.16"

The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in October
Castle Shannon, PA

Average snowfall days in October - Castle Shannon, PA
  • Average snowfall days in October: 0.3 days

The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Castle Shannon, PA

Average daylight in October / Average sunshine in October - Castle Shannon, PA
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in October: 5h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

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Average sunshine days in October
Castle Shannon, PA

Average sunshine days in October - Castle Shannon, PA
  • Average sunshine days in October: 14.4 days

The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is February (9.5 days).

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Average UV index in October
Castle Shannon, PA

Average UV index in October - Castle Shannon, PA
  • Average UV index in October: 2

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in October
Castle Shannon, PA

Average cloud cover in October - Castle Shannon, PA
  • Average cloud cover in October: 48

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in October
Castle Shannon, PA

Average visibility in October - Castle Shannon, PA
  • Average visibility in October: 5mi

The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).

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Castle Shannon, Pennsylvania, USA

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