Average Weather at La Guardia Airport New York, United States
At La Guardia Airport, the summers are warm and humid, the winters are very cold and windy, and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 28°F to 85°F and is rarely below 15°F or above 93°F.
Based on the tourism score, the best times of year to visit La Guardia Airport for warm-weather activities are from mid June to early July and from early August to late September.
The hot season lasts for 3.4 months, from June 2 to September 16, with an average daily high temperature above 76°F. The hottest day of the year is July 21, with an average high of 85°F and low of 72°F.
The cold season lasts for 3.3 months, from December 3 to March 13, with an average daily high temperature below 48°F. The coldest day of the year is January 29, with an average low of 28°F and high of 39°F.
Average High and Low Temperature
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
At La Guardia 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 La Guardia Airport begins around June 26 and lasts for 4.5 months, ending around November 12. On September 23, 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 7.5 months, ending around June 26. 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
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at La Guardia Airport varies throughout the year.
The wetter season lasts 8.5 months, from March 29 to December 12, with a greater than 28% 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 3.5 months, from December 12 to March 29. The smallest chance of a wet day is 22% on January 28.
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
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. La Guardia Airport experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year at La Guardia Airport. The most rain falls during the 31 days centered around June 4, 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
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. La Guardia Airport experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 4.2 months, from November 27 to April 3, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around February 4, with an average total liquid-equivalent accumulation of 0.7 inches.
The snowless period of the year lasts for 7.8 months, from April 3 to November 27. The least snow falls around July 27, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day at La Guardia Airport varies significantly over the course of the year. In 2018, 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
The earliest sunrise is at 5:23 AM on June 14, and the latest sunrise is 2 hours, 5 minutes later at 7:28 AM on November 3. The earliest sunset is at 4:27 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 La Guardia Airport during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
La Guardia Airport experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 3.6 months, from June 7 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 18, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed at La Guardia Airport experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 6.4 months, from October 14 to April 25, with average wind speeds of more than 8.6 miles per hour. The windiest day of the year is February 26, with an average hourly wind speed of 10.6 miles per hour.
The calmer time of year lasts for 5.6 months, from April 25 to October 14. The calmest day of the year is August 1, with an average hourly wind speed of 6.5 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at La Guardia Airport varies throughout the year.
The wind is most often from the north for 1.9 weeks, from March 9 to March 22 and for 1.0 weeks, from March 28 to April 4, with a peak percentage of 34% on March 10. The wind is most often from the west for 6.0 days, from March 22 to March 28; for 1.2 months, from April 4 to May 11; and for 5.3 months, from September 30 to March 9, with a peak percentage of 31% on March 27. The wind is most often from the south for 4.6 months, from May 11 to September 30, with a peak percentage of 38% on July 28.
La Guardia 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 4, with an average temperature above 66°F. The day of the year with the warmest water is August 11, with an average temperature of 72°F.
The time of year with cooler water lasts for 3.6 months, from December 28 to April 17, with an average temperature below 45°F. The day of the year with the coolest water is February 22, with an average temperature of 39°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is at La Guardia 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 La Guardia 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.
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 La Guardia Airport for hot-weather activities is from early July to late August, with a peak score in the last week of July.
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.
The growing season at La Guardia Airport typically lasts for 8.0 months (246 days), from around March 26 to around November 28, rarely starting before March 10 or after April 11, and rarely ending before November 9 or after December 21.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms at La Guardia Airport should appear around April 10, only rarely appearing before March 27 or after April 24.
Growing Degree Days
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 30, with an average of 6.9 kWh.
The darker period of the year lasts for 3.2 months, from November 5 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
For the purposes of this report, the geographical coordinates of La Guardia Airport are 40.776 deg latitude, -73.873 deg longitude, and 16 ft elevation.
The topography within 2 miles of La Guardia Airport is essentially flat, with a maximum elevation change of 89 feet and an average elevation above sea level of 20 feet. Within 10 miles is essentially flat (427 feet). Within 50 miles contains only modest variations in elevation (1,657 feet).
The area within 2 miles of La Guardia Airport is covered by artificial surfaces (62%) and water (37%), within 10 miles by artificial surfaces (78%) and water (19%), and within 50 miles by water (34%) and artificial surfaces (33%).
This report illustrates the typical weather at La Guardia 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
La Guardia 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 New York City, Central Park; John F. Kennedy International Airport; Teterboro Airport; Newark Liberty International Airport; Westchester County Airport; Linden Airport; Essex County Airport; and Republic Airport.
Time zones for aiports and weather stations are provided by AskGeo.com .