Zip 02452 (Waltham, MA) Climate

The climate in 02452 Waltham, MA is mild and humid. Summers are warm and humid, with temperatures reaching the mid-80s on the hottest days. Winters are cold but usually only see a few days with temperatures dropping below freezing. Spring brings moderate weather with rainfall throughout the season and fall is often pleasant and mild. The area gets an average of 45 inches of rain per year and around 46 inches of snow in the winter months. Overall, Waltham enjoys mild weather most of the year that is ideal for outdoor activities like walking, biking, and hiking.

Waltham (zip 02452), Massachusetts gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Waltham (zip 02452) 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 Waltham (zip 02452). The US average is 205 sunny days.

Waltham (zip 02452) gets some kind of precipitation, on average, 131 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 47 inches of rain a year
Snow: averages 52 inches of snow a year

Bestplaces Comfort Index

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

Climate	Waltham, Massachusetts	United States
	Unlock	38.1 in.
	52.4 in.	Unlock
	Unlock	106.2 days
	201 days	Unlock
	82.6°	85.8°
	Unlock	21.7°
	6.8	Unlock
	Unlock	4.3
	192 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 Waltham with an average high temperature of 82.6°, which ranks it as warmer than most places in Massachusetts. In Waltham, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Waltham are June, August and July.

In Waltham, there are 8.8 days annually when the high temperature is over 90°, which is hotter than most places in Massachusetts.

January has the coldest nighttime temperatures for Waltham with an average of 16.7°. This is colder than most places in Massachusetts.

In Waltham, there are 133.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Massachusetts.

In Waltham, 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 Waltham 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 Waltham with 4.4 inches of rain, and the driest month is February with 3.2 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 47.3 inches in Waltham means that it is drier than most places in Massachusetts.

May is the rainiest month in Waltham with 12.8 days of rain, and September is the driest month with only 9.2 rainy days. There are 130.8 rainy days annually in Waltham, 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 24% chance of a rainy day.

An annual snowfall of 52.4 inches in Waltham means that it is snowier than most places in Massachusetts. January is the snowiest month in Waltham with 15.6 inches of snow, and 6 months of the year have significant snowfall.

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