Zip 21409 (Annapolis, MD) Climate

The climate in Annapolis, MD 21409 is typically mild with hot summers and cold winters. The average temperature in the summer months ranges from around 70°F to the high 80s, while winter temperatures typically range from the teens to mid-40s. Rainfall is common throughout the year with an average of 45 inches annually. Snowfall is also possible during the winter months, though usually only for short periods of time. Humidity can be high during the summer months due to its close proximity to Chesapeake Bay and other bodies of water.

Annapolis (zip 21409), Maryland gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Annapolis (zip 21409) averages 13 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 Annapolis (zip 21409). The US average is 205 sunny days.

Annapolis (zip 21409) gets some kind of precipitation, on average, 113 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 13 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 21409 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 21409 zip code, while January and February are the least comfortable months.

Climate	Annapolis, Maryland	United States
	Unlock	38.1 in.
	13.2 in.	Unlock
	Unlock	106.2 days
	213 days	Unlock
	87.1°	85.8°
	Unlock	21.7°
	7.3	Unlock
	Unlock	4.3
	24 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 21409 zip code with an average high temperature of 87.1°, which ranks it as about average compared to other places in Maryland. In the 21409 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 21409 zip code are September, May and June.

In the 21409 zip code, there are 19.5 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 21409 zip code with an average of 28.4°. This is one of the warmest places in Maryland.

In the 21409 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 21409 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.

Humidity in the 21409 zip code 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.

September is the wettest month in the 21409 zip code with 4.3 inches of rain, and the driest month is February with 2.9 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 43.9 inches in the 21409 zip code means that it is about average compared to other places in Maryland.

May is the rainiest month in the 21409 zip code with 10.9 days of rain, and September is the driest month with only 8.0 rainy days. There are 112.7 rainy days annually in the 21409 zip code, which is about average compared to other 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 13.2 inches in the 21409 zip code means that it is less snowy than most places in Maryland. January is the snowiest month in the 21409 zip code with 6.6 inches of snow, and 4 months of the year have significant snowfall.

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