October weather forecast
South Williamsport, PA

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Weather in October

October, the same as September, in South Williamsport, Pennsylvania, is another mild autumn month, with an average temperature fluctuating between 42.6°F (5.9°C) and 59.4°F (15.2°C).

Temperature

South Williamsport's weather changes with the onset of October, slightly falling from an agreeable 72.1°F (22.3°C) in September to a mild 59.4°F (15.2°C). October in South Williamsport witnesses an average low-temperature hovering around a wintry 42.6°F (5.9°C).

Humidity

In October, the average relative humidity is 82%.

Rainfall

In South Williamsport, in October, during 11.8 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. In South Williamsport, during the entire year, the rain falls for 145.2 days and collects up to 16.57" (421mm) of precipitation.

Snowfall

Months with snowfall in South Williamsport are January through April, October through December. October is the first month it typically snows in South Williamsport, Pennsylvania. Throughout October, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 39.1 snowfall days, and 7.56" (192mm) of snow is accumulated.

Daylight

In October, the average length of the day in South Williamsport is 11h and 5min.
On the first day of the month, sunrise is at 7:05 am and sunset at 6:49 pm. On the last day of October, sunrise is at 7:38 am and sunset at 6:04 pm EDT.

Sunshine

In October, the average sunshine is 5.1h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In October, an average UV index of 2 transforms into the following instructions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Around midday, solar radiation is most harmful; hence, exposure should be limited. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What are the temperatures in South Williamsport in October?

In October, the average high-temperature and low-temperature in South Williamsport are 59.4°F (15.2°C) and 42.6°F (5.9°C) respectively. In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is appraised at 87.8°F (31°C).

What is the average humidity in October in South Williamsport?

The average relative humidity in October is 82%.

How much does it rain in South Williamsport in October?

In South Williamsport, during October, the rain falls for 11.8 days and regularly aggregates up to 1.5" (38mm) of precipitation.

When does it start snowing in South Williamsport?

October is the first month it typically snows in South Williamsport. Throughout October, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow.

How many hours of daylight does South Williamsport have in October?

The average day length in October is 11h and 5min.

What time are sunrise and sunset in October in South Williamsport?

In October, on the first day of the month, sunrise is at 7:05 am and sunset at 6:49 pm. On the last day of the month, in South Williamsport, sunrise is at 7:38 am and sunset at 6:04 pm EDT.

How long on average sun shines in October in South Williamsport?

In South Williamsport, the average sunshine duration in October is 5.1h.

What is the month with the lowest UV index in South Williamsport?

The months with the lowest UV index in South Williamsport, Pennsylvania, are January through March, October through December, with an average maximum UV index of 2.

What is the UV index reading in October in South Williamsport?

In October, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from exposure to Sun's UV rays.
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
South Williamsport, PA

Average temperature in October - South Williamsport, PA
  • Average high temperature in October: 59.4°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in October: 42.6°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in October
South Williamsport, PA

Average pressure in October - South Williamsport, 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 (29.94"Hg).

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Average wind speed in October
South Williamsport, PA

Average wind speed in October - South Williamsport, PA
  • Average wind speed in October: 6.3mph

The windiest months (with the highest average wind speed) are January, March and April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in October
South Williamsport, PA

Average humidity in October - South Williamsport, PA
  • Average humidity in October: 82%

The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and July (77%).

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Average rainfall in October
South Williamsport, PA

Average rainfall in October - South Williamsport, PA
  • Average rainfall in October: 1.5"

The wettest month (with the highest rainfall) is April (1.93").
The driest month (with the least rainfall) is November (0.94").

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Average rainfall days in October
South Williamsport, PA

Average rainfall days in October - South Williamsport, PA
  • Average rainfall days in October: 11.8 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (7.5 days).

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Average snowfall in October
South Williamsport, PA

Average snowfall in October - South Williamsport, PA
  • Average snowfall in October: 0.08"

The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in October
South Williamsport, PA

Average snowfall days in October - South Williamsport, PA
  • Average snowfall days in October: 0.3 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
South Williamsport, PA

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in October: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).

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Average sunshine days in October
South Williamsport, PA

Average sunshine days in October - South Williamsport, PA
  • Average sunshine days in October: 16.5 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in October
South Williamsport, PA

Average UV index in October - South Williamsport, PA
  • Average UV index in October: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in October
South Williamsport, PA

Average cloud cover in October - South Williamsport, PA
  • Average cloud cover in October: 48

The months with the most cloud cover are January and February (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 35).

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Average visibility in October
South Williamsport, PA

Average visibility in October - South Williamsport, PA
  • Average visibility in October: 5mi

The month with the highest visibility is April (6mi).
The month with the lowest visibility is September (4mi).

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South Williamsport, Pennsylvania, USA

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