Summer Weather at Manchester Airport United States

Daily high temperatures increase by 4°F, from 74°F to 78°F, rarely falling below 61°F or exceeding 92°F. The highest daily average high temperature is 83°F on July 20.

Daily low temperatures increase by 5°F, from 54°F to 59°F, rarely falling below 46°F or exceeding 72°F. The highest daily average low temperature is 64°F on July 20.

For reference, on July 19, the hottest day of the year, temperatures at Manchester Airport typically range from 64°F to 83°F, while on January 29, the coldest day of the year, they range from 18°F to 34°F.

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

Mineralnye Vody, Russia (5,197 miles away); Tegh, Armenia (5,550 miles); and Soleh Bon, Iran (5,964 miles) are the far-away foreign places with temperatures most similar to Manchester Airport (view comparison).

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The summer at Manchester Airport experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 53% to 36%.

The clearest day of the summer is August 30, with clear, mostly clear, or partly cloudy conditions 64% of the time.

For reference, on February 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 55%, while on September 1, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 64%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Manchester Airport, the chance of a wet day over the course of the summer is very rapidly decreasing, starting the season at 34% and ending it at 25%.

For reference, the year's highest daily chance of a wet day is 35% on June 14, and its lowest chance is 22% on January 29.

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the summer at Manchester Airport is decreasing, starting the season at 3.6 inches, when it rarely exceeds 7.2 inches or falls below 1.4 inches, and ending the season at 3.0 inches, when it rarely exceeds 5.3 inches or falls below 1.2 inches.

The lowest average 31-day accumulation is 3.0 inches on August 26.

Over the course of the summer at Manchester Airport, the length of the day is rapidly decreasing. From the start to the end of the season, the length of the day decreases by 1 hour, 58 minutes, implying an average daily decrease of 1 minute, 18 seconds, and weekly decrease of 9 minutes, 3 seconds.

The shortest day of the summer is August 31, with 13 hours, 11 minutes of daylight and the longest day is June 20, with 15 hours, 21 minutes of daylight.

The earliest sunrise of the summer at Manchester Airport is 5:06 AM on June 14 and the latest sunrise is 1 hour, 4 minutes later at 6:09 AM on August 31.

The latest sunset is 8:28 PM on June 26 and the earliest sunset is 1 hour, 8 minutes earlier at 7:21 PM on August 31.

Daylight saving time is observed at Manchester Airport during 2024, but it neither starts nor ends during the summer, so the entire season is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:06 AM and sets 15 hours, 21 minutes later, at 8:28 PM, while on December 21, the shortest day of the year, it rises at 7:13 AM and sets 9 hours, 1 minute later, at 4:14 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for the summer of 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

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.

The chance that a given day will be muggy at Manchester Airport is increasing during the summer, rising from 4% to 14% over the course of the season.

The highest chance of a muggy day during the summer is 30% on July 29.

For reference, on July 29, the muggiest day of the year, there are muggy conditions 30% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

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 Manchester Airport is essentially constant during the summer, remaining within 0.3 miles per hour of 3.9 miles per hour throughout.

For reference, on February 23, the windiest day of the year, the daily average wind speed is 6.8 miles per hour, while on July 30, the calmest day of the year, the daily average wind speed is 3.6 miles per hour.

The lowest daily average wind speed during the summer is 3.6 miles per hour on July 31.

The hourly average wind direction at Manchester Airport throughout the summer is predominantly from the west, with a peak proportion of 50% on July 8.

Manchester 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 surface water temperature at Manchester Airport is rapidly increasing during the summer, rising by 10°F, from 53°F to 63°F, over the course of the season.

The highest average surface water temperature during the summer is 64°F on August 12.

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 Manchester Airport typically lasts for 5.9 months (180 days), from around April 20 to around October 17, rarely starting before April 1 or after May 10, and rarely ending before September 29 or after November 3.

The summer at Manchester Airport is reliably fully 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.

The average accumulated growing degree days at Manchester Airport are very rapidly increasing during the summer, increasing by 1,863°F, from 445°F to 2,308°F, over the course of the season.

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 at Manchester Airport is gradually decreasing during the summer, falling by 0.8 kWh, from 6.3 kWh to 5.5 kWh, over the course of the season.

The highest average daily incident shortwave solar energy during the summer is 6.8 kWh on July 1.

For the purposes of this report, the geographical coordinates of Manchester Airport are 42.928 deg latitude, -71.437 deg longitude, and 220 ft elevation.

The topography within 2 miles of Manchester Airport contains only modest variations in elevation, with a maximum elevation change of 377 feet and an average elevation above sea level of 226 feet. Within 10 miles contains only modest variations in elevation (1,220 feet). Within 50 miles contains very significant variations in elevation (3,123 feet).

The area within 2 miles of Manchester Airport is covered by artificial surfaces (91%), within 10 miles by trees (56%) and artificial surfaces (39%), and within 50 miles by trees (67%) and artificial surfaces (18%).