Fall Weather at El Alto International Airport Bolivia

Daily high temperatures are around 57°F, rarely falling below 51°F or exceeding 62°F. The highest daily average high temperature is 57°F on May 10.

Daily low temperatures decrease by 11°F, from 40°F to 29°F, rarely falling below 24°F or exceeding 43°F.

For reference, on November 14, the hottest day of the year, temperatures at El Alto International Airport typically range from 38°F to 60°F, while on July 21, the coldest day of the year, they range from 28°F to 56°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.

Cerro La Calera, Mexico (3,274 miles away) is the far-away foreign place with temperatures most similar to El Alto International Airport (view comparison).

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The fall at El Alto International Airport experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 83% to 48%.

The clearest day of the fall is May 31, with clear, mostly clear, or partly cloudy conditions 52% of the time.

For reference, on January 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 86%, while on July 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 65%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At El Alto International 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 3%.

For reference, the year's highest daily chance of a wet day is 50% on January 9, and its lowest chance is 2% on July 21.

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 El Alto International Airport is very rapidly decreasing, starting the season at 2.4 inches, when it rarely exceeds 4.2 inches or falls below 0.7 inches, and ending the season at 0.1 inches, when it rarely exceeds 0.5 inches or falls below -0.0 inches.

Over the course of the fall at El Alto International 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, 12 minutes, implying an average daily decrease of 47 seconds, and weekly decrease of 5 minutes, 31 seconds.

The shortest day of the fall is May 31, with 11 hours, 12 minutes of daylight and the longest day is March 1, with 12 hours, 24 minutes of daylight.

The earliest sunrise of the fall at El Alto International Airport is 6:32 AM on March 1 and the latest sunrise is 22 minutes later at 6:54 AM on May 31.

The latest sunset is 6:56 PM on March 1 and the earliest sunset is 50 minutes earlier at 6:06 PM on May 31.

Daylight saving time is not observed at El Alto International Airport during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:57 AM and sets 13 hours, 7 minutes later, at 7:04 PM, while on June 20, the shortest day of the year, it rises at 7:00 AM and sets 11 hours, 9 minutes later, at 6:08 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 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 El Alto International Airport is essentially constant during the fall, remaining around 0% throughout.

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 El Alto International Airport is decreasing during the fall, decreasing from 7.7 miles per hour to 5.9 miles per hour over the course of the season.

For reference, on December 31, the windiest day of the year, the daily average wind speed is 8.0 miles per hour, while on May 17, the calmest day of the year, the daily average wind speed is 5.9 miles per hour.

The lowest daily average wind speed during the fall is 5.9 miles per hour on May 18.

The hourly average wind direction at El Alto International Airport throughout the fall is predominantly from the north, with a peak proportion of 55% on April 10.

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 El Alto International Airport typically lasts for 5.8 months (175 days), from around October 28 to around April 21, rarely starting before September 20 or after November 26, and rarely ending before March 29 or after May 11.

During the fall at El Alto International Airport, the chance that a given day is within the growing season is very rapidly decreasing falling from 98% to 0% 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 El Alto International Airport are gradually increasing during the fall, increasing by 141°F, from 415°F to 555°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 El Alto International Airport is gradually decreasing during the fall, falling by 0.8 kWh, from 6.3 kWh to 5.5 kWh, over the course of the season.

For the purposes of this report, the geographical coordinates of El Alto International Airport are -16.513 deg latitude, -68.192 deg longitude, and 13,241 ft elevation.

The topography within 2 miles of El Alto International Airport contains only modest variations in elevation, with a maximum elevation change of 397 feet and an average elevation above sea level of 13,260 feet. Within 10 miles contains only modest variations in elevation (5,561 feet). Within 50 miles also contains extreme variations in elevation (18,832 feet).

The area within 2 miles of El Alto International Airport is covered by artificial surfaces (100%), within 10 miles by artificial surfaces (38%) and grassland (21%), and within 50 miles by shrubs (25%) and grassland (25%).