Carnegie, PA Climate

Carnegie, PA is located in the Mid-Atlantic region of the United States and experiences a humid subtropical climate zone. Summers are generally hot and humid, with temperatures averaging around 80 °F (27 °C), while winters tend to be mild with temperatures averaging around 34 °F (1 °C). Precipitation is abundant throughout the year, with yearly averages ranging from 40 to 45 inches (102-114 cm). The area also gets frequent thunderstorms during the summer months.

Carnegie, Pennsylvania gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Carnegie averages 26 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 159 sunny days per year in Carnegie. The US average is 205 sunny days.

Carnegie gets some kind of precipitation, on average, 137 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 84 degrees
Winter Low: the January low is 21
Rain: averages 37 inches of rain a year
Snow: averages 26 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Carnegie is 7.1 (10=best), which means it is more comfortable than most places in Pennsylvania.

9 Summer - 5 Winter

June, September and August are the most pleasant months in Carnegie, while January and February are the least comfortable months.

Climate	Carnegie, Pennsylvania	United States
	36.9 in.	38.1 in.
	26.1 in.	27.8 in.
	137.1 days	106.2 days
	159 days	205 days
	84.1°	85.8°
	20.8°	21.7°
	7.1	7
	3.4	4.3
	774 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 Carnegie with an average high temperature of 84.1°, which ranks it as warmer than most places in Pennsylvania. In Carnegie, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Carnegie are September, June and August.

In Carnegie, there are 11.1 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

January has the coldest nighttime temperatures for Carnegie with an average of 20.8°. This is warmer than most places in Pennsylvania.

In Carnegie, there are 116.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.

In Carnegie, there are 1.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

The humidity is usually comfortable in Carnegie 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 Carnegie with 3.7 inches of rain, and the driest month is February with 2.3 inches. The wettest season is Autumn with 28% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 36.9 inches in Carnegie means that it is one of the driest places in Pennsylvania.

January is the rainiest month in Carnegie with 14.1 days of rain, and August is the driest month with only 9.0 rainy days. There are 137.1 rainy days annually in Carnegie, which is about average compared to other places in Pennsylvania. The rainiest season is Spring when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 26.1 inches in Carnegie means that it is less snowy than most places in Pennsylvania. January is the snowiest month in Carnegie with 8.7 inches of snow, and 6 months of the year have significant snowfall.