Zip 21640 (Henderson, MD) Climate

Henderson, MD has a pleasant climate that is typical of the Mid-Atlantic region. Summers are hot and humid with temperatures reaching into the high 80s on some days, while winters are usually cold but mild by comparison to other areas of the country, with temperatures averaging in the mid-30s. Precipitation is abundant throughout the year and snowfall is light but not unheard of during winter months. Overall, Henderson offers an enjoyable climate for those looking to experience a bit of all four seasons.

Henderson (zip 21640), Maryland gets 45 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Henderson (zip 21640) averages 15 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 202 sunny days per year in Henderson (zip 21640). The US average is 205 sunny days.

Henderson (zip 21640) gets some kind of precipitation, on average, 111 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 87 degrees
Winter Low: the January low is 26
Rain: averages 45 inches of rain a year
Snow: averages 15 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 21640 zip code is 7.3 (10=best), which means it is more comfortable than most places in Maryland.

8 Summer - 5.8 Winter

September, May and June are the most pleasant months in the 21640 zip code, while January and February are the least comfortable months.

Climate	Henderson, Maryland	United States
	Unlock	38.1 in.
	15.3 in.	Unlock
	Unlock	106.2 days
	202 days	Unlock
	87.3°	85.8°
	Unlock	21.7°
	7.3	Unlock
	Unlock	4.3
	46 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 21640 zip code with an average high temperature of 87.3°, which ranks it as about average compared to other places in Maryland. In the 21640 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 21640 zip code are September, May and June.

In the 21640 zip code, there are 24.0 days annually when the high temperature is over 90°, which is about average compared to other places in Maryland.

January has the coldest nighttime temperatures for the 21640 zip code with an average of 25.8°. This is warmer than most places in Maryland.

In the 21640 zip code, there are 85.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Maryland.

In the 21640 zip code, there are 0.3 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 21640 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 21640 zip code.

September is the wettest month in the 21640 zip code with 4.3 inches of rain, and the driest month is February with 3.0 inches. The wettest season is Summer with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 45.1 inches in the 21640 zip code means that it is wetter than most places in Maryland.

April is the rainiest month in the 21640 zip code with 10.7 days of rain, and October is the driest month with only 7.9 rainy days. There are 110.9 rainy days annually in the 21640 zip code, which is less rainy than most 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 15.3 inches in the 21640 zip code means that it is about average compared to other places in Maryland. February is the snowiest month in the 21640 zip code with 6.9 inches of snow, and 4 months of the year have significant snowfall.

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