Allegheny County, Pennsylvania 

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Climate in Allegheny County, Pennsylvania

Allegheny County, Pennsylvania gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Allegheny County averages 27 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 Allegheny County. The US average is 205 sunny days.

Allegheny County gets some kind of precipitation, on average, 142 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 83 degrees
Winter Low: the January low is 21
Rain: averages 39 inches of rain a year
Snow: averages 27 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Allegheny County is 7.0 (10=best), which means it is more comfortable than most places in Pennsylvania.

7 / 10
June, August and September are the most pleasant months in Allegheny County, while January and February are the least comfortable months.

Climate Averages
  Allegheny, PennsylvaniaUnited States
  38.6 in.38.1 in.
  27.0 in.27.8 in.
  142.3 days106.2 days
  162 days205 days
  83.3°85.8°
  20.7°21.7°
  77
  3.44.3
  1042 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 Allegheny County with an average high temperature of 83.3°, which ranks it as about average compared to other places in Pennsylvania. In Allegheny County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Allegheny County are June, September and August.


January has the coldest nighttime temperatures for Allegheny County with an average of 20.7°. This is warmer than most places in Pennsylvania.


In Allegheny County, there are 8.7 days annually when the high temperature is over 90°, which is about average compared to other places in Pennsylvania.


In Allegheny County, there are 116.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.


In Allegheny County, there are 2.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Pennsylvania.


June is the wettest month in Allegheny County with 3.9 inches of rain, and the driest month is February with 2.4 inches. The wettest season is Autumn with 29% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 38.6 inches in Allegheny County means that it is one of the driest places in Pennsylvania.


January is the rainiest month in Allegheny County with 14.7 days of rain, and August is the driest month with only 9.2 rainy days. There are 142.3 rainy days annually in Allegheny County, which is rainier than most 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 27.0 inches in Allegheny County means that it is less snowy than most places in Pennsylvania. January is the snowiest month in Allegheny County with 8.9 inches of snow, and 6 months of the year have significant snowfall.





CLIMATE MAP
  • Annual Rainfall (US Avg: 36.5")
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    MAPS OF ALLEGHENY COUNTY, PENNSYLVANIA
    ZIP CODES IN ALLEGHENY COUNTY, PENNSYLVANIA
    15237, 15108, 15235, 15221, 15102, 15206, 15236, 15227, 15213, 15044, ... 100 more

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