Fall Weather at George Bush Intercontinental Airport Texas, United States

Daily high temperatures decrease by 23°F, from 92°F to 68°F, rarely falling below 55°F or exceeding 97°F.

Daily low temperatures decrease by 24°F, from 74°F to 50°F, rarely falling below 36°F or exceeding 77°F.

For reference, on August 6, the hottest day of the year, temperatures at George Bush Intercontinental Airport typically range from 76°F to 94°F, while on January 7, the coldest day of the year, they range from 45°F to 62°F.

The figure below shows you a compact characterization of the hourly average fall 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.

Fuzhou, China (7,945 miles away) is the far-away foreign place with temperatures most similar to George Bush Intercontinental Airport (view comparison).

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The fall at George Bush Intercontinental Airport experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 46% to 39%. The lowest chance of overcast or mostly cloudy conditions is 30% on October 10.

The clearest day of the fall is October 10, with clear, mostly clear, or partly cloudy conditions 70% of the time.

For reference, on August 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 48%, while on October 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 70%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At George Bush Intercontinental Airport, the chance of a wet day over the course of the fall is very rapidly decreasing, starting the season at 36% and ending it at 28%.

For reference, the year's highest daily chance of a wet day is 40% on June 21, and its lowest chance is 22% on April 15.

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 fall at George Bush Intercontinental Airport is essentially constant, remaining about 4.2 inches throughout, and rarely exceeding 10.4 inches or falling below 0.9 inches.

The highest average 31-day accumulation is 4.6 inches on October 29.

Over the course of the fall at George Bush Intercontinental Airport, the length of the day is very rapidly decreasing. From the start to the end of the season, the length of the day decreases by 2 hours, 23 minutes, implying an average daily decrease of 1 minute, 35 seconds, and weekly decrease of 11 minutes, 6 seconds.

The shortest day of the fall is November 30, with 10 hours, 22 minutes of daylight and the longest day is September 1, with 12 hours, 45 minutes of daylight.

The latest sunrise of the fall at George Bush Intercontinental Airport is 7:35 AM on November 1 and the earliest sunrise is 59 minutes earlier at 6:36 AM on November 2.

The latest sunset is 7:43 PM on September 1 and the earliest sunset is 2 hours, 22 minutes earlier at 5:21 PM on November 30.

Daylight saving time (DST) ends at 1:00 AM on November 2, 2025, shifting sunrise and sunset to be an hour earlier.

For reference, on June 21, the longest day of the year, the Sun rises at 6:20 AM and sets 14 hours, 5 minutes later, at 8:25 PM, while on December 21, the shortest day of the year, it rises at 7:13 AM and sets 10 hours, 13 minutes later, at 5:26 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 fall of 2025. 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 George Bush Intercontinental Airport is very rapidly decreasing during the fall, falling from 91% to 14% over the course of the season.

For reference, on July 21, the muggiest day of the year, there are muggy conditions 98% of the time, while on January 23, the least muggy day of the year, there are muggy conditions 4% 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 George Bush Intercontinental Airport is rapidly increasing during the fall, increasing from 5.6 miles per hour to 7.7 miles per hour over the course of the season.

For reference, on April 3, the windiest day of the year, the daily average wind speed is 8.4 miles per hour, while on August 24, the calmest day of the year, the daily average wind speed is 5.6 miles per hour.

The hourly average wind direction at George Bush Intercontinental Airport throughout the fall is predominantly from the south, with a peak proportion of 48% on September 1.

George Bush Intercontinental 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 George Bush Intercontinental Airport is very rapidly decreasing during the fall, falling by 19°F, from 85°F to 66°F, over the course of the 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 George Bush Intercontinental Airport typically lasts for 9.9 months (300 days), from around February 13 to around December 10, rarely starting before January 10 or after March 16, and rarely ending before November 14 or after January 8.

The fall at George Bush Intercontinental Airport is very likely fully within the growing season, with the chance that a given day is in the growing season rapidly decreasing from 100% to 70% over the course of the 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 George Bush Intercontinental Airport are very rapidly increasing during the fall, increasing by 1,814°F, from 5,098°F to 6,912°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 George Bush Intercontinental Airport is very rapidly decreasing during the fall, falling by 2.1 kWh, from 5.4 kWh to 3.2 kWh, over the course of the season.

For the purposes of this report, the geographical coordinates of George Bush Intercontinental Airport are 29.987 deg latitude, -95.342 deg longitude, and 92 ft elevation.

The topography within 2 miles of George Bush Intercontinental Airport is essentially flat, with a maximum elevation change of 33 feet and an average elevation above sea level of 90 feet. Within 10 miles is essentially flat (135 feet). Within 50 miles also contains only modest variations in elevation (469 feet).

The area within 2 miles of George Bush Intercontinental Airport is covered by artificial surfaces (76%) and bare soil (13%), within 10 miles by artificial surfaces (78%) and herbaceous vegetation (17%), and within 50 miles by cropland (37%) and artificial surfaces (21%).