Middlesex County, MA Climate

Middlesex County, MA has a humid continental climate, which is characterized by warm summers and cold winters. The average annual temperature in Middlesex County is around 54°F (12°C). The county receives an average of 44 inches (112 cm) of rainfall per year, with the most occurring during the months of April to August. During the winter season, Middlesex County experiences moderate to heavy snowfall. Winters can be harsh and temperatures often drop below 0°F (-17°C). In the summer months, temperatures usually peak around 80°F (26.6°C), though extreme heat waves are not uncommon.

Middlesex County, Massachusetts gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Middlesex County averages 52 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 200 sunny days per year in Middlesex County. The US average is 205 sunny days.

Middlesex County gets some kind of precipitation, on average, 129 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 52 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Middlesex County is 6.9 (10=best), which means it is about average compared to other places in Massachusetts.

9.2 Summer - 4.7 Winter

August, July and June are the most pleasant months in Middlesex County, while January and February are the least comfortable months.

Climate	Middlesex, Massachusetts	United States
	48.0 in.	38.1 in.
	51.8 in.	27.8 in.
	129.1 days	106.2 days
	200 days	205 days
	82.8°	85.8°
	16.6°	21.7°
	6.9	7
	3.5	4.3
	227 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 Middlesex County with an average high temperature of 82.8°, which ranks it as warmer than most places in Massachusetts. In Middlesex County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Middlesex County are June, August and September.

In Middlesex County, there are 10.6 days annually when the high temperature is over 90°, which is hotter than most places in Massachusetts.

January has the coldest nighttime temperatures for Middlesex County with an average of 16.6°. This is colder than most places in Massachusetts.

In Middlesex County, there are 132.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Massachusetts.

In Middlesex County, there are 3.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Massachusetts.

Humidity in Middlesex County is generally low and comfortable. But there some days when the humidity becomes unpleasant, especially in July and August. The most humid months (but still comfortable) are July, August and June.

March is the wettest month in Middlesex County with 4.5 inches of rain, and the driest month is February with 3.4 inches. The wettest season is Summer with 26% of yearly precipitation and 23% occurs in Spring, which is the driest season. The annual rainfall of 48.0 inches in Middlesex County means that it is about average compared to other places in Massachusetts.

May is the rainiest month in Middlesex County with 12.6 days of rain, and September is the driest month with only 9.1 rainy days. There are 129.1 rainy days annually in Middlesex County, which is rainier than most 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 51.8 inches in Middlesex County means that it is snowier than most places in Massachusetts. January is the snowiest month in Middlesex County with 15.5 inches of snow, and 6 months of the year have significant snowfall.

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