Zip 02420 (Lexington, MA) Climate

Lexington, MA has a humid continental climate with generally warm summers and cold winters. The average temperature in July is around 75 degrees Fahrenheit (24 Celsius) and in January it drops to 25 degrees Fahrenheit (-4 Celsius). Precipitation levels are evenly spread out throughout the year, with an average of over 40 inches per year. The area gets around 140 sunny days a year which provides for pleasant weather much of the time. Lexington's position along the Charles River also helps keep temperatures relatively moderate throughout the seasons.

Lexington (zip 02420), Massachusetts gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Lexington (zip 02420) averages 52 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 Lexington (zip 02420). The US average is 205 sunny days.

Lexington (zip 02420) gets some kind of precipitation, on average, 135 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 the 02420 zip code is 6.8 (10=best), which means it is less comfortable than most places in Massachusetts.

9.2 Summer - 4.7 Winter

August, July and June are the most pleasant months in the 02420 zip code, while January and February are the least comfortable months.

Climate	Lexington, Massachusetts	United States
	Unlock	38.1 in.
	51.6 in.	Unlock
	Unlock	106.2 days
	201 days	Unlock
	82.5°	85.8°
	Unlock	21.7°
	6.8	Unlock
	Unlock	4.3
	194 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 02420 zip code with an average high temperature of 82.5°, which ranks it as warmer than most places in Massachusetts. In the 02420 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 02420 zip code are June, August and July.

In the 02420 zip code, there are 9.3 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 02420 zip code with an average of 17.1°. This is about average compared to other places in Massachusetts.

In the 02420 zip code, there are 129.9 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Massachusetts.

In the 02420 zip code, there are 3.3 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Massachusetts.

Humidity in the 02420 zip code 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 the 02420 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 02420 zip code means that it is wetter than most places in Massachusetts.

May is the rainiest month in the 02420 zip code with 13.1 days of rain, and September is the driest month with only 9.3 rainy days. There are 135.0 rainy days annually in the 02420 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 51.6 inches in the 02420 zip code means that it is snowier than most places in Massachusetts. January is the snowiest month in the 02420 zip code with 15.7 inches of snow, and 6 months of the year have significant snowfall.

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