Pen Mar, PA Climate


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United States / Pennsylvania / Chambersburg-Waynesboro Metro Area / Franklin County / Pen Mar / Zip Codes
Pen Mar, PA has a humid continental climate, with warm summers and cold winters. The average temperature in the summer is around 74°F (23°C) and in the winter it drops to 25°F (-4°C). Annual precipitation for Pen Mar averages around 44 inches (112 cm), with snowfall averaging 24 inches (61 cm) annually. The area experiences all four seasons, with fall being generally mild and spring often unpredictable.

Pen Mar, Pennsylvania gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Pen Mar averages 31 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 196 sunny days per year in Pen Mar. The US average is 205 sunny days.

Pen Mar gets some kind of precipitation, on average, 121 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 23
Rain: averages 42 inches of rain a year
Snow: averages 31 inches of snow a year

Bestplaces Comfort Index

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

8.7 Summer - 5.3 Winter
June, September and August are the most pleasant months in Pen Mar, while January and February are the least comfortable months.

  ClimatePen Mar, PennsylvaniaUnited States
    Unlock38.1 in.
  30.5 in.  Unlock
    Unlock106.2 days
  196 days  Unlock
  85.7°85.8°
    Unlock21.7°
  7.2  Unlock
    Unlock4.3
  1240 ft.  Unlock
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 Pen Mar with an average high temperature of 85.7°, which ranks it as one of the hottest places in Pennsylvania. In Pen Mar, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Pen Mar are September, June and May.
In Pen Mar, there are 15.2 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.
January has the coldest nighttime temperatures for Pen Mar with an average of 22.6°. This is one of the warmest places in Pennsylvania.
In Pen Mar, there are 105.4 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Pennsylvania.
In Pen Mar, there are 0.4 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Pennsylvania.
The humidity is usually comfortable in Pen Mar 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.
May is the wettest month in Pen Mar with 4.2 inches of rain, and the driest month is January with 2.7 inches. The wettest season is Summer with 28% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 41.9 inches in Pen Mar means that it is drier than most places in Pennsylvania.
May is the rainiest month in Pen Mar with 12.5 days of rain, and October is the driest month with only 8.6 rainy days. There are 121.0 rainy days annually in Pen Mar, 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 30.5 inches in Pen Mar means that it is about average compared to other places in Pennsylvania. February is the snowiest month in Pen Mar with 9.6 inches of snow, and 6 months of the year have significant snowfall.
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