Williamstown, NJ Climate


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Williamstown, NJ has a humid subtropical climate with warm summers and cool winters. The average high temperature during the summer months is around 83 degrees Fahrenheit and the average low temperature during the winter months is around 30 degrees Fahrenheit. The area receives an average of 43 inches of rain per year, mainly occurring in spring and early summer. Winters are usually mild with little snowfall. The area experiences occasional heavy thunderstorms with severe weather events occurring on occasion throughout the year.

Williamstown, New Jersey gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Williamstown averages 19 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 207 sunny days per year in Williamstown. The US average is 205 sunny days.

Williamstown gets some kind of precipitation, on average, 116 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 87 degrees
Winter Low: the January low is 23
Rain: averages 46 inches of rain a year
Snow: averages 19 inches of snow a year


Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Williamstown is 7.2 (10=best), which means it is about average compared to other places in New Jersey.

8.4 Summer - 5.6 Winter
September, June and May are the most pleasant months in Williamstown, while January and February are the least comfortable months.

  ClimateWilliamstown, New JerseyUnited States
  46.0 in.38.1 in.
  18.6 in.27.8 in.
  115.5 days106.2 days
  207 days205 days
  86.7°85.8°
  23.1°21.7°
  7.27
  3.84.3
  144 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 Williamstown with an average high temperature of 86.7°, which ranks it as warmer than most places in New Jersey. In Williamstown, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Williamstown are September, June and May.
In Williamstown, there are 21.4 days annually when the high temperature is over 90°, which is hotter than most places in New Jersey.
January has the coldest nighttime temperatures for Williamstown with an average of 23.1°. This is warmer than most places in New Jersey.
In Williamstown, there are 104.2 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in New Jersey.
In Williamstown, there are 0.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in New Jersey.
The humidity is usually comfortable in Williamstown but some summer months can be unpleasant. July is the most humid month, though humidity is low for most of the year. The most humid months in Williamstown are July, August and June.
July is the wettest month in Williamstown with 4.6 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Autumn with 28% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 46.0 inches in Williamstown means that it is drier than most places in New Jersey.
April is the rainiest month in Williamstown with 11.4 days of rain, and September is the driest month with only 8.0 rainy days. There are 115.5 rainy days annually in Williamstown, which is less rainy than most places in New Jersey. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.
An annual snowfall of 18.6 inches in Williamstown means that it is less snowy than most places in New Jersey. February is the snowiest month in Williamstown with 6.8 inches of snow, and 5 months of the year have significant snowfall.
Reviews for Williamstown
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I’ve lived in Williamstown for 38 yrs. It used to be quiet, rural and a place where everyone knew just about everyone. But like everywhere else, it’s getting overgrown,  More

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Over 11 years ago

Family has lived in Williamstown since 1986 and property taxes have increased dramatically. Weather is pretty decent, lots of restaurants in the general area. Good  More

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Over 16 years ago

$13,000!!!! My parents have a house, no inground pool, the only thing other than the house is the driveway and shed, not even a quarter of an acre.. and their property  More

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