Mountainside, NJ Climate


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United States / New Jersey / New York-Newark-Jersey City Metro Area / Union County / Mountainside / Zip Codes
Mountainside, NJ has a temperate climate with hot summers and cold winters. The average temperature in summer is around 80°F and the average temperature in winter is around 30°F. The area receives an average of 43 inches of precipitation annually, with rainfall typically occurring during spring and summer months. Snowfall varies from year to year but can get up to 40 inches in some parts of the city. On average, the area experiences around 170 days of sunshine each year, making it a great place for outdoor activities like hiking and camping.

Mountainside, New Jersey gets 50 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Mountainside averages 24 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 Mountainside. The US average is 205 sunny days.

Mountainside gets some kind of precipitation, on average, 119 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 86 degrees
Winter Low: the January low is 21
Rain: averages 50 inches of rain a year
Snow: averages 24 inches of snow a year

Bestplaces Comfort Index

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

8.6 Summer - 5.4 Winter
September, June and August are the most pleasant months in Mountainside, while January and February are the least comfortable months.

  ClimateMountainside, New JerseyUnited States
  50.0 in.38.1 in.
  24.0 in.27.8 in.
  118.5 days106.2 days
  207 days205 days
  86.4°85.8°
  21.0°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 Mountainside with an average high temperature of 86.4°, which ranks it as warmer than most places in New Jersey. In Mountainside, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mountainside are September, June and May.
In Mountainside, there are 22.1 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 Mountainside with an average of 21.0°. This is colder than most places in New Jersey.
In Mountainside, there are 114.8 days annually when the nighttime low temperature falls below freezing, which is colder than most places in New Jersey.
In Mountainside, there are 1.1 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 Mountainside 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 June.
July is the wettest month in Mountainside with 5.1 inches of rain, and the driest month is February with 3.0 inches. The wettest season is Autumn with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 50.0 inches in Mountainside means that it is one of the wettest places in New Jersey.
May is the rainiest month in Mountainside with 11.5 days of rain, and February is the driest month with only 8.3 rainy days. There are 118.5 rainy days annually in Mountainside, which is rainier than most places in New Jersey. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 23% chance of a rainy day.
An annual snowfall of 24.0 inches in Mountainside means that it is about average compared to other places in New Jersey. February is the snowiest month in Mountainside with 7.7 inches of snow, and 5 months of the year have significant snowfall.
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