Zip 01821 (Billerica, MA) Climate

01821 Billerica, MA has a humid continental climate, with cold, snowy winters and warm, humid summers. Average temperatures in the winter range from 25 to 35 degrees Fahrenheit, while summer temperatures can go as high as 90 degrees. Rainfall is fairly evenly distributed throughout the year, with an average of 37 inches annually. Snowfall can range from 10-30 inches during the winter months. The area gets plenty of sunshine throughout the year and enjoys four distinct seasons. Overall, 01821 Billerica is a great place to live if you love all four seasons!

Billerica (zip 01821), Massachusetts gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Billerica (zip 01821) averages 55 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 201 sunny days per year in Billerica (zip 01821). The US average is 205 sunny days.

Billerica (zip 01821) gets some kind of precipitation, on average, 132 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 83 degrees
Winter Low: the January low is 17
Rain: averages 48 inches of rain a year
Snow: averages 55 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 01821 zip code is 6.8 (10=best), which means it is less comfortable than most places in Massachusetts.

9.2 Summer - 4.6 Winter

August, July and June are the most pleasant months in the 01821 zip code, while January and February are the least comfortable months.

Climate	Billerica, Massachusetts	United States
	Unlock	38.1 in.
	55.2 in.	Unlock
	Unlock	106.2 days
	201 days	Unlock
	82.5°	85.8°
	Unlock	21.7°
	6.8	Unlock
	Unlock	4.3
	179 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 01821 zip code with an average high temperature of 82.5°, which ranks it as warmer than most places in Massachusetts. In the 01821 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 01821 zip code are June, August and July.

In the 01821 zip code, there are 9.2 days annually when the high temperature is over 90°, which is hotter than most places in Massachusetts.

January has the coldest nighttime temperatures for the 01821 zip code with an average of 17.1°. This is about average compared to other places in Massachusetts.

In the 01821 zip code, there are 130.0 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Massachusetts.

In the 01821 zip code, there are 3.3 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Massachusetts.

The humidity is usually comfortable in the 01821 zip code but some summer days can be muggy. July is the most humid month, though it is still relatively mild compared to many other places. The most humid months are July, August and June.

March is the wettest month in the 01821 zip code with 4.7 inches of rain, and the driest month is February with 3.4 inches. The wettest season is Summer with 27% of yearly precipitation and 23% occurs in Spring, which is the driest season. The annual rainfall of 48.4 inches in the 01821 zip code means that it is wetter than most places in Massachusetts.

May is the rainiest month in the 01821 zip code with 12.9 days of rain, and September is the driest month with only 9.1 rainy days. There are 132.2 rainy days annually in the 01821 zip code, which is one of the rainiest places in Massachusetts. 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 55.2 inches in the 01821 zip code means that it is snowier than most places in Massachusetts. January is the snowiest month in the 01821 zip code with 16.5 inches of snow, and 6 months of the year have significant snowfall.

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