September Weather in Puerta del Llano Mexico
Daily high temperatures are around 79°F, rarely falling below 74°F or exceeding 82°F. The lowest daily average high temperature is 78°F on September 5.
Daily low temperatures decrease by 2°F, from 60°F to 58°F, rarely falling below 53°F or exceeding 63°F.
For reference, on May 19, the hottest day of the year, temperatures in Puerta del Llano typically range from 56°F to 89°F, while on January 8, the coldest day of the year, they range from 40°F to 74°F.
Average High and Low Temperature in September in Puerta del Llano
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. 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.
Average Hourly Temperature in September in Puerta del Llano
The month of September in Puerta del Llano experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 87% to 82%. The highest chance of overcast or mostly cloudy conditions is 87% on September 4.
The clearest day of the month is September 30, with clear, mostly clear, or partly cloudy conditions 18% of the time.
For reference, on September 4, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 87%, while on May 17, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 64%.
Cloud Cover Categories in September in Puerta del Llano
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Puerta del Llano, the chance of a wet day over the course of September is very rapidly decreasing, starting the month at 72% and ending it at 40%.
For reference, the year's highest daily chance of a wet day is 80% on July 10, and its lowest chance is 1% on April 6.
Probability of Precipitation in September in Puerta del Llano
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during September in Puerta del Llano is very rapidly decreasing, starting the month at 5.5 inches, when it rarely exceeds 7.8 inches or falls below 3.4 inches, and ending the month at 2.9 inches, when it rarely exceeds 5.0 inches or falls below 1.2 inches.
Average Monthly Rainfall in September in Puerta del Llano
Over the course of September in Puerta del Llano, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 34 minutes, implying an average daily decrease of 1 minute, 10 seconds, and weekly decrease of 8 minutes, 11 seconds.
The shortest day of the month is September 30, with 11 hours, 58 minutes of daylight and the longest day is September 1, with 12 hours, 31 minutes of daylight.
Hours of Daylight and Twilight in September in Puerta del Llano
The earliest sunrise of the month in Puerta del Llano is 7:37 AM on September 1 and the latest sunrise is 7 minutes later at 7:44 AM on September 30.
The latest sunset is 8:09 PM on September 1 and the earliest sunset is 27 minutes earlier at 7:42 PM on September 30.
Daylight saving time is observed in Puerta del Llano during 2021, but it neither starts nor ends during September, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 7:13 AM and sets 13 hours, 24 minutes later, at 8:37 PM, while on December 21, the shortest day of the year, it rises at 7:25 AM and sets 10 hours, 52 minutes later, at 6:18 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in September in Puerta del Llano
The figure below presents a compact representation of key lunar data for September 2021. 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.
Moon Rise, Set & Phases in September in Puerta del Llano
The chance that a given day will be muggy in Puerta del Llano is essentially constant during September, remaining around 0% throughout.
For reference, on August 27, the muggiest day of the year, there are muggy conditions 1% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in September in Puerta del Llano
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Puerta del Llano is essentially constant during September, remaining within 0.1 miles per hour of 4.6 miles per hour throughout.
For reference, on March 24, the windiest day of the year, the daily average wind speed is 5.9 miles per hour, while on July 26, the calmest day of the year, the daily average wind speed is 3.9 miles per hour.
Average Wind Speed in September in Puerta del Llano
The hourly average wind direction in Puerta del Llano throughout September is predominantly from the east, with a peak proportion of 54% on September 30.
Wind Direction in September in Puerta del Llano
The growing season in Puerta del Llano typically lasts for 11 months (344 days), from around January 22 to around January 1, rarely starting after March 3, or ending before November 24.
The month of September in Puerta del Llano is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in September in Puerta del Llano
The average accumulated growing degree days in Puerta del Llano are rapidly increasing during September, increasing by 515°F, from 4,158°F to 4,673°F, over the course of the month.
Growing Degree Days in September in Puerta del Llano
The average daily incident shortwave solar energy in Puerta del Llano is essentially constant during September, remaining within 0.1 kWh of 5.6 kWh throughout.
Average Daily Incident Shortwave Solar Energy in September in Puerta del Llano
For the purposes of this report, the geographical coordinates of Puerta del Llano are 20.785 deg latitude, -103.461 deg longitude, and 5,262 ft elevation.
The topography within 2 miles of Puerta del Llano contains only modest variations in elevation, with a maximum elevation change of 190 feet and an average elevation above sea level of 5,252 feet. Within 10 miles contains only modest variations in elevation (4,281 feet). Within 50 miles also contains extreme variations in elevation (9,701 feet).
The area within 2 miles of Puerta del Llano is covered by cropland (80%) and artificial surfaces (18%), within 10 miles by cropland (31%) and trees (28%), and within 50 miles by trees (39%) and cropland (32%).
This report illustrates the typical weather in Puerta del Llano, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Puerta del Llano.
For each station, the records are corrected for the elevation difference between that station and Puerta del Llano according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Puerta del Llano is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Puerta del Llano and a given station.
The stations contributing to this reconstruction are: Guadalajara International Airport (MMGL, 84%, 33 kilometers, southeast); Lic. Jesús Terán Peredo International Airport (MMAS, 8%, 157 kilometers, northeast); and Amado Nervo International Airport (MMEP, 7%, 160 kilometers, northwest).
Time zones for airports and weather stations are provided by AskGeo.com .