Zip 18018 (Bethlehem, PA) Climate

In 18018 Bethlehem, PA, the climate can be described as humid continental. This means that the area experiences four distinct seasons with hot summers and cold winters. The average temperature in summer months ranges from 75-80°F and in winter months it ranges from 30-40°F. Precipitation is generally abundant throughout the year, although it tends to peak during the late spring and summer months due to warmer temperatures promoting convectional rainfall. On average, Bethlehem receives 45 inches of precipitation annually. The area is also frequently affected by snowfall during winter months, as this region receives an average of 27 inches yearly.

Bethlehem (zip 18018), Pennsylvania gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Bethlehem (zip 18018) averages 29 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 Bethlehem (zip 18018). The US average is 205 sunny days.

Bethlehem (zip 18018) gets some kind of precipitation, on average, 122 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 48 inches of rain a year
Snow: averages 29 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 18018 zip code is 7.0 (10=best), which means it is more comfortable than most places in Pennsylvania.

8.8 Summer - 5.1 Winter

June, September and August are the most pleasant months in the 18018 zip code, while January and February are the least comfortable months.

Climate	Bethlehem, Pennsylvania	United States
	Unlock	38.1 in.
	29.2 in.	Unlock
	Unlock	106.2 days
	204 days	Unlock
	84.5°	85.8°
	Unlock	21.7°
	7	Unlock
	Unlock	4.3
	299 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 the 18018 zip code with an average high temperature of 84.5°, which ranks it as warmer than most places in Pennsylvania. In the 18018 zip code, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 18018 zip code are June, September and August.

In the 18018 zip code, there are 12.4 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

January has the coldest nighttime temperatures for the 18018 zip code with an average of 18.5°. This is about average compared to other places in Pennsylvania.

In the 18018 zip code, there are 131.5 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Pennsylvania.

In the 18018 zip code, there are 1.9 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 the 18018 zip code 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 the 18018 zip code with 5.0 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 47.5 inches in the 18018 zip code means that it is wetter than most places in Pennsylvania.

May is the rainiest month in the 18018 zip code with 11.9 days of rain, and February is the driest month with only 8.9 rainy days. There are 121.9 rainy days annually in the 18018 zip code, which is less rainy than most 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 29.2 inches in the 18018 zip code means that it is about average compared to other places in Pennsylvania. February is the snowiest month in the 18018 zip code with 10.0 inches of snow, and 6 months of the year have significant snowfall.

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