Fall Weather in San Juan Tizahuapán Mexico

Daily high temperatures are around 68°F, rarely falling below 59°F or exceeding 73°F.

Daily low temperatures decrease by 9°F, from 51°F to 42°F, rarely falling below 36°F or exceeding 54°F. The highest daily average low temperature is 51°F on September 5.

For reference, on April 25, the hottest day of the year, temperatures in San Juan Tizahuapán typically range from 49°F to 75°F, while on January 12, the coldest day of the year, they range from 39°F to 65°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.

Arani, Bolivia (3,429 miles away) is the far-away foreign place with temperatures most similar to San Juan Tizahuapán (view comparison).

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The fall in San Juan Tizahuapán experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 84% to 46%. The highest chance of overcast or mostly cloudy conditions is 85% on September 14. The lowest chance of overcast or mostly cloudy conditions is 45% on November 29.

The clearest day of the fall is November 29, with clear, mostly clear, or partly cloudy conditions 55% of the time.

For reference, on September 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 85%, while on February 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 66%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In San Juan Tizahuapán, the chance of a wet day over the course of the fall is very rapidly decreasing, starting the season at 77% and ending it at 13%.

For reference, the year's highest daily chance of a wet day is 80% on July 3, and its lowest chance is 9% on January 14.

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 San Juan Tizahuapán is very rapidly decreasing, starting the season at 7.0 inches, when it rarely exceeds 10.8 inches or falls below 4.0 inches, and ending the season at 0.8 inches, when it rarely exceeds 1.8 inches or falls below 0.2 inches.

The highest average 31-day accumulation is 7.1 inches on September 7.

Over the course of the fall in San Juan Tizahuapán, 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, 29 minutes, implying an average daily decrease of 1 minute, 0 seconds, and weekly decrease of 6 minutes, 58 seconds.

The shortest day of the fall is November 30, with 11 hours, 1 minute of daylight and the longest day is September 1, with 12 hours, 30 minutes of daylight.

The earliest sunrise of the fall in San Juan Tizahuapán is 6:19 AM on September 1 and the latest sunrise is 34 minutes later at 6:53 AM on November 30.

The latest sunset is 6:49 PM on September 1 and the earliest sunset is 56 minutes earlier at 5:53 PM on November 25.

Daylight saving time is not observed in San Juan Tizahuapán during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:56 AM and sets 13 hours, 21 minutes later, at 7:16 PM, while on December 21, the shortest day of the year, it rises at 7:05 AM and sets 10 hours, 55 minutes later, at 6:00 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 San Juan Tizahuapán is essentially constant during the fall, remaining around 0% throughout.

For reference, on June 4, the muggiest day of the year, there are muggy conditions 0% 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 in San Juan Tizahuapán is decreasing during the fall, decreasing from 6.6 miles per hour to 5.2 miles per hour over the course of the season.

For reference, on June 27, the windiest day of the year, the daily average wind speed is 6.9 miles per hour, while on December 21, the calmest day of the year, the daily average wind speed is 5.2 miles per hour.

The hourly average wind direction in San Juan Tizahuapán throughout the fall is predominantly from the east, with a peak proportion of 66% on September 1.

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 San Juan Tizahuapán typically lasts for 10 months (312 days), from around February 11 to around December 19, rarely starting after March 16, or ending before October 31.

The fall in San Juan Tizahuapán is more likely than not fully within the growing season, with the chance that a given day is in the growing season rapidly decreasing from 100% to 65% 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 San Juan Tizahuapán are rapidly increasing during the fall, increasing by 623°F, from 2,174°F to 2,797°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 San Juan Tizahuapán is decreasing during the fall, falling by 1.1 kWh, from 6.1 kWh to 5.0 kWh, over the course of the season.

For the purposes of this report, the geographical coordinates of San Juan Tizahuapán are 20.051 deg latitude, -98.665 deg longitude, and 8,104 ft elevation.

The topography within 2 miles of San Juan Tizahuapán contains very significant variations in elevation, with a maximum elevation change of 968 feet and an average elevation above sea level of 8,083 feet. Within 10 miles contains very significant variations in elevation (2,844 feet). Within 50 miles contains large variations in elevation (12,566 feet).

The area within 2 miles of San Juan Tizahuapán is covered by grassland (65%), cropland (23%), and shrubs (12%), within 10 miles by grassland (39%) and trees (20%), and within 50 miles by cropland (33%) and shrubs (24%).