Zip 21084 (Jarrettsville, MD) Climate

21084 Jarrettsville, MD has a warm and humid climate with hot, humid summers and mild winters. Average highs in the summer reach into the mid to high 80s while winter lows are typically in the upper 30s. The area sees an average of 43 inches of rain per year and 108 sunny days annually. Humidity levels can be high throughout the year due to close proximity to Chesapeake Bay.

Jarrettsville (zip 21084), Maryland gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Jarrettsville (zip 21084) averages 29 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 212 sunny days per year in Jarrettsville (zip 21084). The US average is 205 sunny days.

Jarrettsville (zip 21084) gets some kind of precipitation, on average, 121 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 86 degrees
Winter Low: the January low is 23
Rain: averages 46 inches of rain a year
Snow: averages 29 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 21084 zip code is 7.2 (10=best), which means it is less comfortable than most places in Maryland.

8.4 Summer - 5.5 Winter

September, June and May are the most pleasant months in the 21084 zip code, while January and February are the least comfortable months.

Climate	Jarrettsville, Maryland	United States
	46.3 in.	38.1 in.
	29.0 in.	27.8 in.
	121.2 days	106.2 days
	212 days	205 days
	86.4°	85.8°
	23.4°	21.7°
	7.2	7
	3.9	4.3
	592 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 the 21084 zip code with an average high temperature of 86.4°, which ranks it as cooler than most places in Maryland. In the 21084 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 21084 zip code are September, May and June.

In the 21084 zip code, there are 20.9 days annually when the high temperature is over 90°, which is cooler than most places in Maryland.

January has the coldest nighttime temperatures for the 21084 zip code with an average of 23.4°. This is colder than most places in Maryland.

In the 21084 zip code, there are 97.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Maryland.

In the 21084 zip code, there are 0.6 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Maryland.

The humidity is usually comfortable in the 21084 zip code but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.

September is the wettest month in the 21084 zip code with 4.7 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 46.3 inches in the 21084 zip code means that it is one of the wettest places in Maryland.

May is the rainiest month in the 21084 zip code with 11.8 days of rain, and October is the driest month with only 8.5 rainy days. There are 121.2 rainy days annually in the 21084 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 23% chance of a rainy day.

An annual snowfall of 29.0 inches in the 21084 zip code means that it is snowier than most places in Maryland. February is the snowiest month in the 21084 zip code with 10.0 inches of snow, and 6 months of the year have significant snowfall.

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