October weather forecast
Saint Marys, PA

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Weather in October

October, the same as September, in Saint Marys, Pennsylvania, is another mild autumn month, with an average temperature varying between 41.9°F (5.5°C) and 57.4°F (14.1°C).

Temperature

The average high-temperature decreases in October, shifting from a pleasant 70.3°F (21.3°C) in September to a moderate 57.4°F (14.1°C). Saint Marys's average low-temperature for the month of October records at a wintry 41.9°F (5.5°C).

Humidity

In Saint Marys, the average relative humidity in October is 84%.

Rainfall

In Saint Marys, in October, it is raining for 10.4 days, with typically 1.26" (32mm) of accumulated precipitation. In Saint Marys, during the entire year, the rain falls for 118.9 days and collects up to 13.31" (338mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 1.5 snowfall days, it receives 0.31" (8mm) of snow. Throughout the year, there are 52.7 snowfall days, and 16.14" (410mm) of snow is accumulated.

Daylight

The average length of the day in October is 11h and 5min.
On the first day of October, sunrise is at 7:11 am and sunset at 6:55 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 6:10 pm EDT.

Sunshine

In October, the average sunshine is 4.5h.

UV index

The average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The UV index of 2 during October leads to these advisories:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Updated: Aug 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are October temperatures?

The high-temperature, in October, in Saint Marys, is 57.4°F (14.1°C), while the low-temperature averages to 41.9°F (5.5°C).

What is the average humidity in October in Saint Marys?

In October, the average relative humidity is 84%.

How much does it rain in October?

In Saint Marys, in October, it is raining for 10.4 days, with typically 1.26" (32mm) of accumulated precipitation.

When does it start to snow?

October is the first month it typically snows. Throughout October, in the average 1.5 snowfall days, it receives 0.31" (8mm) of snow.

What is the average length of the day in October?

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

When are sunrise and sunset in October?

On the first day of October, sunrise is at 7:11 am and sunset at 6:55 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 6:10 pm EDT.

How many hours of sunshine does Saint Marys have in October?

In Saint Marys, the average sunshine duration in October is 4.5h.

How high is the UV index in October?

In Saint Marys, the average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe 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
Saint Marys, PA

Average temperature in October - Saint Marys, PA
  • Average high temperature in October: 57.4°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in October: 41.9°F

The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).

Average pressure in October
Saint Marys, PA

Average pressure in October - Saint Marys, PA
  • Average pressure in October: 30.03"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in October
Saint Marys, PA

Average wind speed in October - Saint Marys, PA
  • Average wind speed in October: 7.1mph

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in October
Saint Marys, PA

Average humidity in October - Saint Marys, PA
  • Average humidity in October: 84%

The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are June and July (78%).

Average rainfall in October
Saint Marys, PA

Average rainfall in October - Saint Marys, PA
  • Average rainfall in October: 1.26"

The wettest month (with the highest rainfall) is April (1.5").
The driest months (with the least rainfall) are January and November (0.83").

Average rainfall days in October
Saint Marys, PA

Average rainfall days in October - Saint Marys, PA
  • Average rainfall days in October: 10.4 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is February (5.1 days).

Average snowfall in October
Saint Marys, PA

Average snowfall in October - Saint Marys, PA
  • Average snowfall in October: 0.31"

The month with the highest snowfall is February (4.21").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in October
Saint Marys, PA

Average snowfall days in October - Saint Marys, PA
  • Average snowfall days in October: 1.5 days

The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in October /
Average sunshine in October
Saint Marys, PA

Average daylight in October / Average sunshine in October - Saint Marys, 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 12min).

  • Average sunshine in October: 4h and 3min

The months with the most sunshine are July and August (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

Average sunshine days in October
Saint Marys, PA

Average sunshine days in October - Saint Marys, PA
  • Average sunshine days in October: 17.6 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (13 days).

Average UV index in October
Saint Marys, PA

Average UV index in October - Saint Marys, PA
  • Average UV index in October: 2

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in October
Saint Marys, PA

Average cloud cover in October - Saint Marys, PA
  • Average cloud cover in October: 57

The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 42).

Average visibility in October
Saint Marys, PA

Average visibility in October - Saint Marys, PA
  • Average visibility in October: 5mi

The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (5mi).
The months with the lowest visibility are August and September (4mi).

Saint Marys, Pennsylvania, USA

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