October weather forecast
Williamsport, PA

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Weather in October

October brings a soothing chill to Williamsport as the heart of autumn sets in. A sharp decline in temperature is noticed with an average high of 59.4°F (15.2°C). This month showcases the turning leaves of the Pennsylvania autumn, as vibrant colors paint the cityscape. Humidity sees a small increase, giving the morning air a crisp feel. The decreasing daylight hours and fleeting sunlight underline a beautiful fall season.

Temperature

The arrival of October in Williamsport corresponds with a shift in temperature, down from an agreeable 72.1°F (22.3°C) in September to a moderate 59.4°F (15.2°C). Throughout October, a steady low-temperature average of 42.6°F (5.9°C) is noted.

Humidity

The average relative humidity in October in Williamsport is 82%.

Rainfall

In October, the rain falls for 11.8 days. Throughout October, 1.5" (38mm) of precipitation is accumulated. Throughout the year, in Williamsport, Pennsylvania, there are 145.2 rainfall days, and 16.57" (421mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in October in 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 in Williamsport. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In October, an average UV index of 2 transforms into the following instructions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Stay sun-safe with clothing that is both closely woven and worn loosely. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What are October temperatures in Williamsport?

In Williamsport, 59.4°F (15.2°C) is the average high-temperature and 42.6°F (5.9°C) is the average low-temperature during October. The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in July is estimated at 87.8°F (31°C).

What is the average humidity in October in Williamsport?

In Williamsport, the average relative humidity in October is 82%.

How many days does it rain in October in Williamsport?

In Williamsport, in October, it is raining for 11.8 days, with typically 1.5" (38mm) of accumulated precipitation.

When does it start snowing in Williamsport?

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

How many hours of daylight does Williamsport have in October?

In Williamsport, Pennsylvania, the average day length in October is 11h and 5min.

What time are sunrise and sunset in October in Williamsport?

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

How long on average sun shines in October in Williamsport?

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

When is the lowest UV index in Williamsport?

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

How high is the UV index in October in Williamsport?

The average daily maximum UV index in October is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Williamsport, PA

Average temperature in October - 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
Williamsport, PA

Average pressure in October - 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
Williamsport, PA

Average wind speed in October - 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
Williamsport, PA

Average humidity in October - 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
Williamsport, PA

Average rainfall in October - 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
Williamsport, PA

Average rainfall days in October - 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
Williamsport, PA

Average snowfall in October - 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
Williamsport, PA

Average snowfall days in October - 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
Williamsport, PA

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

Average sunshine days in October - 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
Williamsport, PA

Average UV index in October - 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
Williamsport, PA

Average cloud cover in October - 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
Williamsport, PA

Average visibility in October - 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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Williamsport, Pennsylvania, USA

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