Zip 21869 (Vienna, MD) Climate

The climate in Vienna, MD (21869) is generally mild, with warm summers and cool winters. The average temperature in January is around 38 degrees Fahrenheit, while the average temperature in July is around 77 degrees Fahrenheit. Rainfall occurs throughout the year, with an average of about 4 inches per month. Snowfall can occur during the winter months, usually averaging around 6 to 8 inches per year. Humidity levels tend to be on the higher side due to its location near the Atlantic Ocean.

Vienna (zip 21869), Maryland gets 45 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Vienna (zip 21869) averages 6 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 210 sunny days per year in Vienna (zip 21869). The US average is 205 sunny days.

Vienna (zip 21869) gets some kind of precipitation, on average, 101 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 89 degrees
Winter Low: the January low is 29
Rain: averages 45 inches of rain a year
Snow: averages 6 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 21869 zip code is 7.5 (10=best), which means it is one of the most pleasant places in Maryland.

7.4 Summer - 6.4 Winter

September, May and October are the most pleasant months in the 21869 zip code, while January and February are the least comfortable months.

Climate	Vienna, Maryland	United States
	Unlock	38.1 in.
	5.8 in.	Unlock
	Unlock	106.2 days
	210 days	Unlock
	89.2°	85.8°
	Unlock	21.7°
	7.5	Unlock
	Unlock	4.3
	15 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 21869 zip code with an average high temperature of 89.2°, which ranks it as one of the hottest places in Maryland. In the 21869 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 21869 zip code are May, September and June.

In the 21869 zip code, there are 33.3 days annually when the high temperature is over 90°, which is one of the hottest places in Maryland.

January has the coldest nighttime temperatures for the 21869 zip code with an average of 28.5°. This is one of the warmest places in Maryland.

In the 21869 zip code, there are 68.7 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Maryland.

In the 21869 zip code, there are 0.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Maryland.

The humidity can be uncomfortably heavy or close in the 21869 zip code during the summer months. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most humid months in the 21869 zip code.

August is the wettest month in the 21869 zip code with 4.3 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Autumn with 28% of yearly precipitation and 23% occurs in Winter, which is the driest season. The annual rainfall of 44.9 inches in the 21869 zip code means that it is wetter than most places in Maryland.

April is the rainiest month in the 21869 zip code with 9.6 days of rain, and September is the driest month with only 6.8 rainy days. There are 100.7 rainy days annually in the 21869 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 5.8 inches in the 21869 zip code means that it is one of the least snowy places in Maryland. February is the snowiest month in the 21869 zip code with 2.3 inches of snow, and 3 months of the year have significant snowfall.

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