Zip 21045 (Columbia, MD) Climate

The climate in 21045 Columbia, MD is generally mild and humid. Summers are usually hot and humid, with temperatures reaching the mid to upper 80s during the day and dropping into the 60s overnight. Winters are cold and wet, with temperatures ranging from the high 30s to the mid 50s during day time. Rainfall is fairly consistent throughout the year, with average annual precipitation totaling approximately 41 inches. Snowfall is rare in this area, usually occurring only once or twice each winter season. Overall, Columbia has mild weather conditions year-round that make it an ideal place to live for any outdoor enthusiast.

Columbia (zip 21045), Maryland gets 45 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Columbia (zip 21045) averages 17 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 Columbia (zip 21045). The US average is 205 sunny days.

Columbia (zip 21045) gets some kind of precipitation, on average, 114 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 88 degrees
Winter Low: the January low is 24
Rain: averages 45 inches of rain a year
Snow: averages 17 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 21045 zip code is 7.3 (10=best), which means it is more comfortable than most places in Maryland.

8.2 Summer - 5.7 Winter

September, June and May are the most pleasant months in the 21045 zip code, while January and February are the least comfortable months.

Climate	Columbia, Maryland	United States
	Unlock	38.1 in.
	17.4 in.	Unlock
	Unlock	106.2 days
	213 days	Unlock
	88.0°	85.8°
	Unlock	21.7°
	7.3	Unlock
	Unlock	4.3
	379 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 21045 zip code with an average high temperature of 88.0°, which ranks it as warmer than most places in Maryland. In the 21045 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 21045 zip code are September, May and June.

In the 21045 zip code, there are 29.3 days annually when the high temperature is over 90°, which is hotter than most places in Maryland.

January has the coldest nighttime temperatures for the 21045 zip code with an average of 23.9°. This is colder than most places in Maryland.

In the 21045 zip code, there are 99.7 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Maryland.

In the 21045 zip code, there are 0.9 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Maryland.

The humidity is usually acceptable in the 21045 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. July, August and June are the three most uncomfortably humid months in the 21045 zip code.

May is the wettest month in the 21045 zip code with 4.4 inches of rain, and the driest month is February with 3.1 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 45.2 inches in the 21045 zip code means that it is wetter than most places in Maryland.

May is the rainiest month in the 21045 zip code with 11.6 days of rain, and October is the driest month with only 8.3 rainy days. There are 114.0 rainy days annually in the 21045 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 17.4 inches in the 21045 zip code means that it is snowier than most places in Maryland. February is the snowiest month in the 21045 zip code with 6.1 inches of snow, and 5 months of the year have significant snowfall.

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