Arnold, MD Climate

Arnold, MD is known for its temperate climate with hot summers and mild winters. The average summer temperature is around 80 degrees Fahrenheit (26 Celsius) while the average winter temperature is in the mid-40s (7 Celsius). Rainfall in Arnold is distributed evenly throughout the year with an annual average of about 43 inches (109 cm). Arnold also experiences moderate snowfall in the winter months, usually ranging from 2 to 5 inches (5-13 cm). Humidity levels are relatively high throughout the year due to the nearby Chesapeake Bay.

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

Arnold averages 14 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 Arnold. The US average is 205 sunny days.

Arnold 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 Arnold 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 Arnold, while January and February are the least comfortable months.

Climate	Arnold, Maryland	United States
	43.7 in.	38.1 in.
	13.5 in.	27.8 in.
	115.9 days	106.2 days
	210 days	205 days
	87.2°	85.8°
	28.4°	21.7°
	7.3	7
	4	4.3
	135 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 Arnold with an average high temperature of 87.2°, which ranks it as about average compared to other places in Maryland. In Arnold, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Arnold are September, May and June.

In Arnold, there are 19.9 days annually when the high temperature is over 90°, which is cooler than most places in Maryland.

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

In Arnold, there are 63.0 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Maryland.

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

Humidity in Arnold can be uncomfortable during the summer, but comfortable for most of the year. The most uncomfortably humid months are July, August and June. The humid season runs from June-September and the most comfortable months are October-May.

July is the wettest month in Arnold 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 43.7 inches in Arnold means that it is about average compared to other places in Maryland.

May is the rainiest month in Arnold with 11.2 days of rain, and October is the driest month with only 8.1 rainy days. There are 115.9 rainy days annually in Arnold, 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 Arnold means that it is less snowy than most places in Maryland. January is the snowiest month in Arnold with 6.6 inches of snow, and 4 months of the year have significant snowfall.