Average Weather in September in Hermenegildo Galeana Mexico
Daily high temperatures are around 89°F, rarely falling below 84°F or exceeding 93°F. The lowest daily average high temperature is 88°F on September 16.
Daily low temperatures are around 75°F, rarely falling below 73°F or exceeding 77°F.
For reference, on April 9, the hottest day of the year, temperatures in Hermenegildo Galeana typically range from 76°F to 94°F, while on January 6, the coldest day of the year, they range from 71°F to 91°F.
Average High and Low Temperature in September
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
The month of September in Hermenegildo Galeana experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 90% throughout the month. The highest chance of overcast or mostly cloudy conditions is 91% on September 15.
The clearest day of the month is September 30, with clear, mostly clear, or partly cloudy conditions 11% of the time.
For reference, on June 28, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 93%, while on January 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 78%.
Cloud Cover Categories in September
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 Hermenegildo Galeana, the chance of a wet day over the course of September is rapidly decreasing, starting the month at 87% and ending it at 80%.
For reference, the year's highest daily chance of a wet day is 88% on September 12, and its lowest chance is 3% on January 23.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Hermenegildo Galeana is rapidly decreasing, starting the month at 13.2 inches, when it rarely exceeds 20.6 inches or falls below 6.2 inches, and ending the month at 12.2 inches, when it rarely exceeds 19.6 inches or falls below 4.1 inches.
The highest average 31-day accumulation is 13.7 inches on September 13.
Average Monthly Rainfall in September
Over the course of September in Hermenegildo Galeana, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 25 minutes, implying an average daily decrease of 52 seconds, and weekly decrease of 6 minutes, 1 second.
The shortest day of the month is September 30, with 12 hours, 0 minutes of daylight and the longest day is September 1, with 12 hours, 25 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Hermenegildo Galeana is 6:59 AM on September 1 and the latest sunrise is 2 minutes, 26 seconds later at 7:01 AM on September 30.
The latest sunset is 7:24 PM on September 1 and the earliest sunset is 22 minutes earlier at 7:01 PM on September 30.
Daylight saving time is observed in Hermenegildo Galeana during 2018, 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 6:42 AM and sets 13 hours, 3 minutes later, at 7:45 PM, while on December 21, the shortest day of the year, it rises at 6:34 AM and sets 11 hours, 12 minutes later, at 5:46 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in September
The chance that a given day will be muggy in Hermenegildo Galeana is essentially constant during September, remaining around 100% throughout.
For reference, on August 2, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 29, the least muggy day of the year, there are muggy conditions 71% of the time.
Humidity Comfort Levels in September
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Hermenegildo Galeana is essentially constant during September, remaining within 0.1 miles per hour of 5.3 miles per hour throughout.
For reference, on January 13, the windiest day of the year, the daily average wind speed is 8.0 miles per hour, while on July 24, the calmest day of the year, the daily average wind speed is 4.9 miles per hour.
Average Wind Speed in September
Wind Direction in September
Hermenegildo Galeana 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 Hermenegildo Galeana is essentially constant during September, remaining within 1°F of 86°F throughout.
Average Water Temperature in September
Temperatures in Hermenegildo Galeana are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.
Time Spent in Various Temperature Bands and the Growing Season in September
The average accumulated growing degree days in Hermenegildo Galeana are rapidly increasing during September, increasing by 878°F, from 7,531°F to 8,410°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Hermenegildo Galeana is essentially constant during September, remaining within 0.1 kWh of 4.5 kWh throughout.
The lowest average daily incident shortwave solar energy during September is 4.4 kWh on September 16.
Average Daily Incident Shortwave Solar Energy in September
For the purposes of this report, the geographical coordinates of Hermenegildo Galeana are 15.553 deg latitude, -93.007 deg longitude, and 299 ft elevation.
The topography within 2 miles of Hermenegildo Galeana contains large variations in elevation, with a maximum elevation change of 2,300 feet and an average elevation above sea level of 588 feet. Within 10 miles contains large variations in elevation (7,287 feet). Within 50 miles also contains extreme variations in elevation (10,253 feet).
The area within 2 miles of Hermenegildo Galeana is covered by cropland (63%) and trees (37%), within 10 miles by cropland (68%) and trees (32%), and within 50 miles by water (35%) and cropland (34%).
This report illustrates the typical weather in Hermenegildo Galeana year round, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Hermenegildo Galeana.
For each station, the records are corrected for the elevation difference between that station and Hermenegildo Galeana 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 Hermenegildo Galeana is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Hermenegildo Galeana and a given station.
The stations contributing to this reconstruction are: Tapachula International Airport (60%, 109 kilometers, southeast) and General Div P A Angel H Corzo Molina (40%, 133 kilometers, north).
Time zones for aiports and weather stations are provided by AskGeo.com .