Lehigh County, PA Climate

Lehigh County, PA has a humid continental climate, with four distinct seasons. Summers are warm and humid, with temperatures commonly reaching into the 80s and 90s. Winters can be cold, with average temperatures ranging from the mid-20s to low 30s. Precipitation is fairly evenly distributed throughout the year, but the county experiences hot and humid summers that can lead to thunderstorms. Snowfall totals in the area usually range from 20-30 inches annually. Spring and fall temperatures tend to be mild and pleasant with occasional rain showers.

Lehigh County, Pennsylvania gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Lehigh County averages 28 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 204 sunny days per year in Lehigh County. The US average is 205 sunny days.

Lehigh County gets some kind of precipitation, on average, 112 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 85 degrees
Winter Low: the January low is 19
Rain: averages 47 inches of rain a year
Snow: averages 28 inches of snow a year

Bestplaces Comfort Index

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

8.8 Summer - 5.2 Winter

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

Climate	Lehigh, Pennsylvania	United States
	47.0 in.	38.1 in.
	27.8 in.	27.8 in.
	112.1 days	106.2 days
	204 days	205 days
	85.0°	85.8°
	18.5°	21.7°
	7.1	7
	3.8	4.3
	571 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 Lehigh County with an average high temperature of 85.0°, which ranks it as warmer than most places in Pennsylvania. In Lehigh County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lehigh County are September, June and August.

In Lehigh County, there are 16.4 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

January has the coldest nighttime temperatures for Lehigh County with an average of 18.5°. This is about average compared to other places in Pennsylvania.

In Lehigh County, there are 130.2 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Pennsylvania.

In Lehigh County, there are 2.5 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Pennsylvania.

The humidity is usually comfortable in Lehigh County 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.

July is the wettest month in Lehigh County with 4.9 inches of rain, and the driest month is February with 2.8 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 47.0 inches in Lehigh County means that it is wetter than most places in Pennsylvania.

May is the rainiest month in Lehigh County with 10.9 days of rain, and February is the driest month with only 8.0 rainy days. There are 112.1 rainy days annually in Lehigh County, which is one of the least rainy places in Pennsylvania. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 23% chance of a rainy day.

An annual snowfall of 27.8 inches in Lehigh County means that it is less snowy than most places in Pennsylvania. February is the snowiest month in Lehigh County with 9.3 inches of snow, and 6 months of the year have significant snowfall.

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