Fall Weather in La Ciudad Mexico

Daily high temperatures are around 61°F, rarely falling below 54°F or exceeding 69°F.

Daily low temperatures decrease by 17°F, from 46°F to 29°F, rarely falling below 23°F or exceeding 49°F.

For reference, on June 4, the hottest day of the year, temperatures in La Ciudad typically range from 44°F to 71°F, while on January 22, the coldest day of the year, they range from 27°F to 57°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.

Abra Pampa, Argentina (4,189 miles away) is the far-away foreign place with temperatures most similar to La Ciudad (view comparison).

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The fall in La Ciudad experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 86% to 44%. The lowest chance of overcast or mostly cloudy conditions is 38% on November 11.

The clearest day of the fall is November 11, with clear, mostly clear, or partly cloudy conditions 62% of the time.

For reference, on August 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 87%, while on May 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 74%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In La Ciudad, the chance of a wet day over the course of the fall is very rapidly decreasing, starting the season at 67% and ending it at 6%.

For reference, the year's highest daily chance of a wet day is 71% on August 20, and its lowest chance is 2% on March 29.

Over the course of the fall in La Ciudad, the chance of a day with only rain decreases from 67% to 4%, the chance of a day with mixed snow and rain increases from 0% to 2%, and the chance of a day with only snow remains an essentially constant 0% throughout.

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 in La Ciudad is very rapidly decreasing, starting the season at 5.8 inches, when it rarely exceeds 8.9 inches or falls below 3.0 inches, and ending the season at 0.7 inches, when it rarely exceeds 2.4 inches.

Over the course of the fall in La Ciudad, 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, 48 minutes, implying an average daily decrease of 1 minute, 12 seconds, and weekly decrease of 8 minutes, 24 seconds.

The shortest day of the fall is November 30, with 10 hours, 47 minutes of daylight and the longest day is September 1, with 12 hours, 35 minutes of daylight.

The earliest sunrise of the fall in La Ciudad is 6:44 AM on September 1 and the latest sunrise is 43 minutes later at 7:28 AM on November 30.

The latest sunset is 7:19 PM on September 1 and the earliest sunset is 1 hour, 5 minutes earlier at 6:15 PM on November 27.

Daylight saving time is not observed in La Ciudad during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 6:16 AM and sets 13 hours, 36 minutes later, at 7:52 PM, while on December 21, the shortest day of the year, it rises at 7:41 AM and sets 10 hours, 40 minutes later, at 6:21 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 in La Ciudad is decreasing during the fall, falling from 7% to 0% over the course of the season.

For reference, on August 15, the muggiest day of the year, there are muggy conditions 8% of the time, while on November 28, 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 in La Ciudad is increasing during the fall, increasing from 2.2 miles per hour to 3.2 miles per hour over the course of the season.

For reference, on April 18, the windiest day of the year, the daily average wind speed is 3.8 miles per hour, while on August 15, the calmest day of the year, the daily average wind speed is 2.1 miles per hour.

The hourly average wind direction in La Ciudad throughout the fall is predominantly from the east, with a peak proportion of 49% on November 23.

La Ciudad 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 in La Ciudad is rapidly decreasing during the fall, falling by 7°F, from 86°F to 78°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 in La Ciudad typically lasts for 5.9 months (178 days), from around April 27 to around October 23, rarely starting before April 8 or after May 15, and rarely ending before October 4 or after November 10.

During the fall in La Ciudad, the chance that a given day is within the growing season is very rapidly decreasing falling from 100% to 1% 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 in La Ciudad are increasing during the fall, increasing by 338°F, from 1,232°F to 1,570°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 in La Ciudad is gradually decreasing during the fall, falling by 0.5 kWh, from 4.9 kWh to 4.4 kWh, over the course of the season.

For the purposes of this report, the geographical coordinates of La Ciudad are 23.731 deg latitude, -105.689 deg longitude, and 8,432 ft elevation.

The topography within 2 miles of La Ciudad contains very significant variations in elevation, with a maximum elevation change of 988 feet and an average elevation above sea level of 8,542 feet. Within 10 miles contains very significant variations in elevation (7,549 feet). Within 50 miles also contains extreme variations in elevation (10,505 feet).

The area within 2 miles of La Ciudad is covered by trees (98%), within 10 miles by trees (97%), and within 50 miles by trees (90%).