Zip 21655 (Preston, MD) Climate

21655 Preston, MD has a humid subtropical climate with mild winters and hot summers. The average annual temperature is around 62°F and the average summer temperature is around 84°F. It receives an average of 45 inches of rain per year and experiences around 17 days of snowfall annually. Humidity levels are typically quite high throughout the year, although they tend to drop during the winter months. Despite this, it rarely gets too cold in Preston and rarely goes below freezing in the wintertime.

Preston (zip 21655), Maryland gets 45 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Preston (zip 21655) averages 11 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 209 sunny days per year in Preston (zip 21655). The US average is 205 sunny days.

Preston (zip 21655) gets some kind of precipitation, on average, 107 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 88 degrees
Winter Low: the January low is 27
Rain: averages 45 inches of rain a year
Snow: averages 11 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 21655 zip code is 7.4 (10=best), which means it is one of the most pleasant places in Maryland.

7.6 Summer - 6.1 Winter

September, May and October are the most pleasant months in the 21655 zip code, while January and February are the least comfortable months.

Climate	Preston, Maryland	United States
	Unlock	38.1 in.
	11.4 in.	Unlock
	Unlock	106.2 days
	209 days	Unlock
	88.4°	85.8°
	Unlock	21.7°
	7.4	Unlock
	Unlock	4.3
	49 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 21655 zip code with an average high temperature of 88.4°, which ranks it as warmer than most places in Maryland. In the 21655 zip code, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 21655 zip code are September, May and June.

In the 21655 zip code, there are 29.6 days annually when the high temperature is over 90°, which is hotter than most places in Maryland.

January has the coldest nighttime temperatures for the 21655 zip code with an average of 27.2°. This is warmer than most places in Maryland.

In the 21655 zip code, there are 75.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Maryland.

In the 21655 zip code, there are 0.4 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Maryland.

The humidity can be uncomfortably heavy or close in the 21655 zip code during the summer months. August is the most humid month, though humidity is low for most of the year. August, July and June are the three most humid months in the 21655 zip code.

March is the wettest month in the 21655 zip code with 4.2 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Summer with 27% of yearly precipitation and 23% occurs in Spring, which is the driest season. The annual rainfall of 45.4 inches in the 21655 zip code means that it is wetter than most places in Maryland.

April is the rainiest month in the 21655 zip code with 10.1 days of rain, and September is the driest month with only 7.5 rainy days. There are 107.0 rainy days annually in the 21655 zip code, which is one of the least rainy places in Maryland. The rainiest season is Summer 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 11.4 inches in the 21655 zip code means that it is less snowy than most places in Maryland. February is the snowiest month in the 21655 zip code with 4.7 inches of snow, and 4 months of the year have significant snowfall.

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