Zip 21012 (Arnold, MD) Climate

In 2012, Arnold, MD had a moderate climate with mild summers and cool winters. The average daily high temperatures in the summer months ranged from the mid-70s to the mid-80s Fahrenheit, while winter brought average highs of around 40-50°F. Precipitation in Arnold was fairly consistent throughout the year, ranging from roughly 3 to 4 inches per month. During the summer months there were some higher precipitation days due to thunderstorms and showers, but overall it was quite mild. Additionally, snowfall in Arnold was generally light during the winter months compared to other parts of Maryland.

Arnold (zip 21012), Maryland gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Arnold (zip 21012) averages 14 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 213 sunny days per year in Arnold (zip 21012). The US average is 205 sunny days.

Arnold (zip 21012) gets some kind of precipitation, on average, 116 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 28
Rain: averages 44 inches of rain a year
Snow: averages 14 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 21012 zip code is 7.3 (10=best), which means it is more comfortable than most places in Maryland.

7.6 Summer - 6 Winter

September, May and October are the most pleasant months in the 21012 zip code, while January and February are the least comfortable months.

Climate	Arnold, Maryland	United States
	Unlock	38.1 in.
	13.5 in.	Unlock
	Unlock	106.2 days
	213 days	Unlock
	87.1°	85.8°
	Unlock	21.7°
	7.3	Unlock
	Unlock	4.3
	84 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 21012 zip code with an average high temperature of 87.1°, which ranks it as about average compared to other places in Maryland. In the 21012 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 21012 zip code are September, May and June.

In the 21012 zip code, there are 19.8 days annually when the high temperature is over 90°, which is cooler than most places in Maryland.

January has the coldest nighttime temperatures for the 21012 zip code with an average of 28.4°. This is one of the warmest places in Maryland.

In the 21012 zip code, there are 62.8 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Maryland.

In the 21012 zip code, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Maryland.

The humidity can be uncomfortably heavy or close in the 21012 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 21012 zip code.

July is the wettest month in the 21012 zip code with 4.4 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Autumn with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 43.6 inches in the 21012 zip code means that it is about average compared to other places in Maryland.

May is the rainiest month in the 21012 zip code with 11.2 days of rain, and October is the driest month with only 8.1 rainy days. There are 116.1 rainy days annually in the 21012 zip code, which is rainier 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 13.5 inches in the 21012 zip code means that it is less snowy than most places in Maryland. January is the snowiest month in the 21012 zip code with 6.6 inches of snow, and 4 months of the year have significant snowfall.

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