Zip 02638 (Dennis, MA) Climate

02638 Dennis, MA has a humid continental climate that experiences four distinct seasons. Summers are warm and humid with average daytime temperatures in the low to mid 70s and evenings that can become quite cool. Winters are cold with temperatures ranging from the low 20s to the mid 30s and frequent snowfall. Spring weather is mild and often brings showers while autumn brings crisp air, colorful foliage, and harvest season. The coastline along 02638 Dennis, MA experiences strong winds during certain times of year which can make fall and winter feel even colder.

Dennis (zip 02638), Massachusetts gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Dennis (zip 02638) averages 26 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 Dennis (zip 02638). The US average is 205 sunny days.

Dennis (zip 02638) gets some kind of precipitation, on average, 106 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 79 degrees
Winter Low: the January low is 23
Rain: averages 46 inches of rain a year
Snow: averages 26 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 02638 zip code is 7.1 (10=best), which means it is one of the most pleasant places in Massachusetts.

9.2 Summer - 5.4 Winter

June, September and August are the most pleasant months in the 02638 zip code, while January and February are the least comfortable months.

Climate	Dennis, Massachusetts	United States
	Unlock	38.1 in.
	25.7 in.	Unlock
	Unlock	106.2 days
	201 days	Unlock
	78.9°	85.8°
	Unlock	21.7°
	7.1	Unlock
	Unlock	4.3
	80 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 02638 zip code with an average high temperature of 78.9°, which ranks it as cooler than most places in Massachusetts. In the 02638 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 02638 zip code are August, July and June.

In the 02638 zip code, there are 1.3 days annually when the high temperature is over 90°, which is cooler than most places in Massachusetts.

January has the coldest nighttime temperatures for the 02638 zip code with an average of 22.5°. This is warmer than most places in Massachusetts.

In the 02638 zip code, there are 102.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Massachusetts.

In the 02638 zip code, there are 0.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Massachusetts.

The humidity is usually comfortable in the 02638 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. The most humid months are July, August and September.

March is the wettest month in the 02638 zip code with 4.7 inches of rain, and the driest month is July with 3.1 inches. The wettest season is Summer with 27% of yearly precipitation and 22% occurs in Autumn, which is the driest season. The annual rainfall of 46.3 inches in the 02638 zip code means that it is drier than most places in Massachusetts.

December is the rainiest month in the 02638 zip code with 10.8 days of rain, and July is the driest month with only 7.0 rainy days. There are 105.7 rainy days annually in the 02638 zip code, which is less rainy than most places in Massachusetts. The rainiest season is Spring when it rains 28% of the time and the driest is Autumn with only a 21% chance of a rainy day.

An annual snowfall of 25.7 inches in the 02638 zip code means that it is less snowy than most places in Massachusetts. February is the snowiest month in the 02638 zip code with 8.4 inches of snow, and 6 months of the year have significant snowfall.

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