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Average Weather at Newark Liberty International Airport New Jersey, United States

At Newark Liberty International Airport, the summers are warm and humid, the winters are very cold, and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 26°F to 87°F and is rarely below 12°F or above 95°F.

Climate Summary

very coldcoldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDec64%64%47%47%clearovercastprecipitation: 3.8 inprecipitation: 3.8 in2.8 in2.8 inmuggy: 51%muggy: 51%0%0%drydrytourism score: 6.8tourism score: 6.80.20.2
Click on each chart for more information.

Based on the tourism score, the best times of year to visit Newark Liberty International Airport for warm-weather activities are from mid June to early July and from early August to late September.

Temperature

The hot season lasts for 3.5 months, from May 31 to September 16, with an average daily high temperature above 77°F. The hottest day of the year is July 21, with an average high of 87°F and low of 71°F.

The cold season lasts for 3.3 months, from December 2 to March 11, with an average daily high temperature below 49°F. The coldest day of the year is January 29, with an average low of 26°F and high of 39°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature

Average Hourly Temperature at Newark Liberty International AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMfreezingvery coldvery coldcoldcoldcoolcoolcomfortablewarmwarmfreezing
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Shamkhal, Russia (5,606 miles away); Koch'ang, South Korea (7,020 miles); and Niimi, Japan (6,928 miles) are the far-away foreign places with temperatures most similar to Newark Liberty International Airport (view comparison).

Clouds

At Newark Liberty International Airport, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year at Newark Liberty International Airport begins around June 25 and lasts for 4.6 months, ending around November 12. On August 29, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 64% of the time, and overcast or mostly cloudy 36% of the time.

The cloudier part of the year begins around November 12 and lasts for 7.4 months, ending around June 25. On January 3, the cloudiest day of the year, the sky is overcast or mostly cloudy 53% of the time, and clear, mostly clear, or partly cloudy 47% of the time.

Cloud Cover Categories

Cloud Cover Categories at Newark Liberty International AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 2964%Aug 2964%Jan 347%Jan 347%Jun 2555%Jun 2555%Nov 1255%Nov 1255%clearmostly clearpartly cloudymostly cloudyovercast
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Newark Liberty International Airport varies throughout the year.

The wetter season lasts 4.9 months, from March 29 to August 26, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 35% on August 1.

The drier season lasts 7.1 months, from August 26 to March 29. The smallest chance of a wet day is 22% on January 29.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 35% on August 1.

Daily Chance of Precipitation

Daily Chance of Precipitation at Newark Liberty International AirportwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Aug 135%Aug 135%Jan 2922%Jan 2922%Jan 125%Jan 125%Mar 2929%Mar 2929%rainsnow
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Newark Liberty International Airport experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year at Newark Liberty International Airport. The most rain falls during the 31 days centered around July 29, with an average total accumulation of 3.8 inches.

The least rain falls around February 7, with an average total accumulation of 2.1 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Snowfall

We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Newark Liberty International Airport experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 4.5 months, from November 20 to April 4, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 24, with an average total liquid-equivalent accumulation of 0.7 inches.

The snowless period of the year lasts for 7.5 months, from April 4 to November 20. The least snow falls around July 21, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall at Newark Liberty International AirportsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 in2.5 in3.0 in3.5 in4.0 inJan 240.7 inJan 240.7 inJul 210.0 inJul 210.0 inNov 200.1 inNov 200.1 inApr 40.1 inApr 40.1 in
The average liquid-equivalent snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.

Sun

The length of the day at Newark Liberty International Airport varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 15 minutes of daylight; the longest day is June 21, with 15 hours, 6 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight at Newark Liberty International AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 6 minJun 2115 hr, 6 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 15 minDec 219 hr, 15 minDec 21nightnightday
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:24 AM on June 14, and the latest sunrise is 2 hours, 6 minutes later at 7:30 AM on November 4. The earliest sunset is at 4:29 PM on December 8, and the latest sunset is 4 hours, 3 minutes later at 8:31 PM on June 27.

Daylight saving time (DST) is observed at Newark Liberty International Airport during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time at Newark Liberty International AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 145:24 AMJun 145:24 AM8:31 PMJun 278:31 PMJun 27Dec 84:29 PMDec 84:29 PM7:30 AMNov 47:30 AMNov 4Mar 12DSTMar 12DSTDSTNov 5DSTNov 5daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Newark Liberty International Airport experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.8 months, from June 2 to September 26, during which time the comfort level is muggy, oppressive, or miserable at least 13% of the time. The muggiest day of the year is August 2, with muggy conditions 51% of the time.

The least muggy day of the year is February 11, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels at Newark Liberty International AirportmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Feb 110%Feb 110%Aug 251%Aug 251%Jun 213%Jun 213%Sep 2613%Sep 2613%oppressiveoppressivemuggymuggydrydrycomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Newark Liberty International Airport experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.1 months, from October 21 to April 26, with average wind speeds of more than 7.4 miles per hour. The windiest day of the year is February 26, with an average hourly wind speed of 9.3 miles per hour.

The calmer time of year lasts for 5.9 months, from April 26 to October 21. The calmest day of the year is August 1, with an average hourly wind speed of 5.5 miles per hour.

Average Wind Speed

Average Wind Speed at Newark Liberty International AirportwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mph14 mphFeb 269.3 mphFeb 269.3 mphAug 15.5 mphAug 15.5 mphOct 217.4 mphOct 217.4 mphApr 267.4 mphApr 267.4 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction at Newark Liberty International Airport varies throughout the year.

The wind is most often from the south for 2.3 months, from July 20 to September 28, with a peak percentage of 36% on July 28. The wind is most often from the west for 9.7 months, from September 28 to July 20, with a peak percentage of 46% on January 1.

Wind Direction

Wind Direction at Newark Liberty International AirportWSWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westsouthnortheast
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Newark Liberty International Airport is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.4 months, from June 23 to October 2, with an average temperature above 66°F. The day of the year with the warmest water is August 8, with an average temperature of 73°F.

The time of year with cooler water lasts for 3.7 months, from December 27 to April 17, with an average temperature below 46°F. The day of the year with the coolest water is February 22, with an average temperature of 39°F.

Average Water Temperature

Average Water Temperature at Newark Liberty International AirportwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec30°F35°F40°F45°F50°F55°F60°F65°F70°F75°F80°FAug 873°FAug 873°F39°FFeb 2239°FFeb 22Jun 2366°FJun 2366°FOct 266°FOct 266°FDec 2746°FDec 2746°FApr 1746°FApr 1746°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is at Newark Liberty International Airport throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Newark Liberty International Airport for general outdoor tourist activities are from mid June to early July and from early August to late September, with a peak score in the first week of September.

Tourism Score

Tourism Score at Newark Liberty International Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.86.80.20.26.26.25.95.9 precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Newark Liberty International Airport for hot-weather activities is from late June to late August, with a peak score in the last week of July.

Beach/Pool Score

Beach/Pool Score at Newark Liberty International Airportbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.46.40.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season at Newark Liberty International Airport typically lasts for 7.5 months (228 days), from around March 31 to around November 15, rarely starting before March 16 or after April 16, and rarely ending before October 28 or after December 4.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season at Newark Liberty International Airportgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 3150%Mar 3150%Nov 1550%Nov 1590%Apr 1690%Apr 1690%Oct 2890%Oct 2810%Mar 1610%Mar 1610%Dec 410%Dec 4Jul 18100%Jul 18100%freezingvery coldcomfortablewarmhotcoldcoolfrigid
The percentage of time spent in various temperature bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms at Newark Liberty International Airport should appear around April 5, only rarely appearing before March 21 or after April 20.

Growing Degree Days

Growing Degree Days at Newark Liberty International AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F500°F1,000°F1,500°F2,000°F2,500°F3,000°F3,500°F4,000°FApr 584°FApr 584°FJun 13900°FJun 13900°FJul 191,800°FJul 191,800°FDec 313,902°FDec 313,902°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.8 months, from April 29 to August 22, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is June 28, with an average of 6.8 kWh.

The darker period of the year lasts for 3.1 months, from November 6 to February 10, with an average daily incident shortwave energy per square meter below 2.8 kWh. The darkest day of the year is December 23, with an average of 1.7 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy at Newark Liberty International AirportbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhJun 286.8 kWhJun 286.8 kWhDec 231.7 kWhDec 231.7 kWhApr 295.8 kWhApr 295.8 kWhAug 225.8 kWhAug 225.8 kWhNov 62.8 kWhNov 62.8 kWhFeb 102.8 kWhFeb 102.8 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Newark Liberty International Airport are 40.697 deg latitude, -74.176 deg longitude, and 13 ft elevation.

The topography within 2 miles of Newark Liberty International Airport contains only modest variations in elevation, with a maximum elevation change of 105 feet and an average elevation above sea level of 14 feet. Within 10 miles contains only modest variations in elevation (653 feet). Within 50 miles contains significant variations in elevation (1,680 feet).

The area within 2 miles of Newark Liberty International Airport is covered by artificial surfaces (98%), within 10 miles by artificial surfaces (82%) and water (13%), and within 50 miles by trees (36%) and artificial surfaces (32%).

Data Sources

This report illustrates the typical weather at Newark Liberty International Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

Newark Liberty International Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Linden Airport; Teterboro Airport; New York City, Central Park; Essex County Airport; Morristown Municipal Airport; La Guardia Airport; John F. Kennedy International Airport; and Monmouth Executive Airport.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.