St. Marys, PA Climate


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United States / Pennsylvania / No Metro Area / Elk County / St. Marys / Zip Codes
St. Marys, PA has a temperate climate with warm summers and mild winters. The average summer temperatures range from the mid 70s to low 80s, while winter temperatures tend to stay around the high 30s and low 40s. The area also experiences an average of 41 inches of precipitation annually, with most of it coming during the warmer months. The weather in St. Marys is generally mild throughout the year, making it an ideal place to explore outdoors or simply relax and enjoy the views.

St. Marys, Pennsylvania gets 45 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. Marys averages 69 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 162 sunny days per year in St. Marys. The US average is 205 sunny days.

St. Marys gets some kind of precipitation, on average, 167 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 79 degrees
Winter Low: the January low is 13
Rain: averages 45 inches of rain a year
Snow: averages 69 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for St. Marys is 6.2 (10=best), which means it is one of the least comfortable places in Pennsylvania.

8.9 Summer - 3.5 Winter
August, July and June are the most pleasant months in St. Marys, while January and December are the least comfortable months.

  ClimateSt. Marys, PennsylvaniaUnited States
  45.4 in.38.1 in.
  68.8 in.27.8 in.
  166.7 days106.2 days
  162 days205 days
  78.7°85.8°
  13.1°21.7°
  6.27
  3.44.3
  1660 ft.2443 ft.
Climate
YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for St. Marys with an average high temperature of 78.7°, which ranks it as one of the coolest places in Pennsylvania. In St. Marys, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Marys are August, July and June.
In St. Marys, there are 1.0 days annually when the high temperature is over 90°, which is one of the coolest places in Pennsylvania.
January has the coldest nighttime temperatures for St. Marys with an average of 13.1°. This is one of the coldest places in Pennsylvania.
In St. Marys, there are 167.0 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Pennsylvania.
In St. Marys, there are 12.6 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Pennsylvania.
Humidity in St. Marys is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are July, August and June.
July is the wettest month in St. Marys with 4.7 inches of rain, and the driest month is February with 2.5 inches. The wettest season is Autumn with 30% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 45.4 inches in St. Marys means that it is wetter than most places in Pennsylvania.
January is the rainiest month in St. Marys with 17.5 days of rain, and August is the driest month with only 11.3 rainy days. There are 166.7 rainy days annually in St. Marys, which is one of the rainiest places in Pennsylvania. The rainiest season is Spring when it rains 29% of the time and the driest is Autumn with only a 22% chance of a rainy day.
An annual snowfall of 68.8 inches in St. Marys means that it is one of the snowiest places in Pennsylvania. January is the snowiest month in St. Marys with 19.2 inches of snow, and 7 months of the year have significant snowfall.
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John · Saint Marys, PA
Population Decline
Over 11 years ago

The population continues to decline in St. Marys. The Census Bureau came out with their latest numbers and the population continues to decline. In 2011 it was at  More

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John · Saint Marys, PA
Dying Town - Literally
Over 11 years ago

This place is full of nothing but old people and rednecks. They have no idea what the rest of the world is like because they are very isolated geographically and  More

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John · Saint Marys, PA
Textbook example of "brain drain"
Over 11 years ago

St. Marys, and the whole Elk County area are a textbook example of the term "Brain Drain." Ever since the mid to late 90's, most of the youth that went away to college  More

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