Baltimore County, MD Climate

Baltimore, Maryland is located in the Mid-Atlantic region of the United States and has a mild climate. Summers are hot and humid with temperatures in the mid to upper 80s, while winters are generally cold with temperatures ranging from the low 30s to the mid 40s. The area receives an average of 42 inches of rain per year, with most falling between April and September. Snowfall varies each winter season but typically ranges between 10-20 inches. Baltimore enjoys four distinct seasons and temperate weather throughout much of the year, making it a great place to live.

Baltimore County, Maryland gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Baltimore County averages 20 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 Baltimore County. The US average is 205 sunny days.

Baltimore County gets some kind of precipitation, on average, 118 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 25
Rain: averages 44 inches of rain a year
Snow: averages 20 inches of snow a year

Bestplaces Comfort Index

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

7.9 Summer - 5.7 Winter

September, May and June are the most pleasant months in Baltimore County, while January and February are the least comfortable months.

Climate	Baltimore, Maryland	United States
	44.4 in.	38.1 in.
	20.3 in.	27.8 in.
	117.6 days	106.2 days
	213 days	205 days
	87.4°	85.8°
	25.2°	21.7°
	7.3	7
	4.1	4.3
	423 ft.	2443 ft.

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 Baltimore County with an average high temperature of 87.4°, which ranks it as about average compared to other places in Maryland. In Baltimore County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Baltimore County are September, May and June.

In Baltimore County, there are 27.2 days annually when the high temperature is over 90°, which is hotter than most places in Maryland.

January has the coldest nighttime temperatures for Baltimore County with an average of 25.2°. This is about average compared to other places in Maryland.

In Baltimore County, there are 89.0 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Maryland.

In Baltimore County, there are 0.5 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Maryland.

The humidity is usually acceptable in Baltimore County but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most uncomfortably humid months in Baltimore County.

May is the wettest month in Baltimore County with 4.3 inches of rain, and the driest month is February with 2.9 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 44.4 inches in Baltimore County means that it is wetter than most places in Maryland.

May is the rainiest month in Baltimore County with 11.7 days of rain, and October is the driest month with only 8.3 rainy days. There are 117.6 rainy days annually in Baltimore County, which is rainier than most places in Maryland. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 20.3 inches in Baltimore County means that it is snowier than most places in Maryland. January is the snowiest month in Baltimore County with 7.2 inches of snow, and 5 months of the year have significant snowfall.

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