Bryn Mawr, PA Climate


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United States / Pennsylvania / Philadelphia-Camden-Wilmington Metro Area / Montgomery County / Bryn Mawr / Zip Codes
Bryn Mawr, Pennsylvania has a humid continental climate with four distinct seasons. Summers are generally hot and humid, while winters are cold and snowy. Precipitation averages around 42 inches per year, with snowfall amounts varying from season to season. Spring and autumn offer mild temperatures and plenty of rainfall. The area is also subject to extreme weather events such as thunderstorms, heavy rains, and occasional tornadoes. Overall the climate in Bryn Mawr is pleasant throughout the year, making it an ideal place for outdoor activities like hiking, biking, and fishing.

Bryn Mawr, Pennsylvania gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Bryn Mawr averages 21 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 201 sunny days per year in Bryn Mawr. The US average is 205 sunny days.

Bryn Mawr gets some kind of precipitation, on average, 116 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 86 degrees
Winter Low: the January low is 22
Rain: averages 48 inches of rain a year
Snow: averages 21 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Bryn Mawr is 7.2 (10=best), which means it is one of the most pleasant places in Pennsylvania.

8.6 Summer - 5.5 Winter
June, September and May are the most pleasant months in Bryn Mawr, while January and February are the least comfortable months.

  ClimateBryn Mawr, PennsylvaniaUnited States
  48.3 in.38.1 in.
  20.7 in.27.8 in.
  115.9 days106.2 days
  201 days205 days
  86.3°85.8°
  21.7°21.7°
  7.27
  4.14.3
  420 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 Bryn Mawr with an average high temperature of 86.3°, which ranks it as one of the hottest places in Pennsylvania. In Bryn Mawr, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Bryn Mawr are September, June and May.
In Bryn Mawr, there are 20.4 days annually when the high temperature is over 90°, which is one of the hottest places in Pennsylvania.
January has the coldest nighttime temperatures for Bryn Mawr with an average of 21.7°. This is warmer than most places in Pennsylvania.
In Bryn Mawr, there are 109.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.
In Bryn Mawr, there are 1.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.
The humidity is usually comfortable in Bryn Mawr but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.
September is the wettest month in Bryn Mawr with 4.8 inches of rain, and the driest month is February with 2.9 inches. The wettest season is Autumn with 26% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 48.3 inches in Bryn Mawr means that it is one of the wettest places in Pennsylvania.
April is the rainiest month in Bryn Mawr with 11.6 days of rain, and September is the driest month with only 8.5 rainy days. There are 115.9 rainy days annually in Bryn Mawr, which is less rainy than most places in Pennsylvania. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 23% chance of a rainy day.
An annual snowfall of 20.7 inches in Bryn Mawr means that it is less snowy than most places in Pennsylvania. February is the snowiest month in Bryn Mawr with 7.7 inches of snow, and 5 months of the year have significant snowfall.
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Jerry · Bryn Mawr, PA
Leafy, thoughtful
Over 6 years ago

The Charm of Bryn Mawr? This place aims high. Bryn Mawr produced a president of Harvard, a president of the University of Chicago, famous theatre celebrities, great  More

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