Average Weather in September in San Pedro Cacahuatepec Mexico
The lowest daily average high temperature is 88°F on September 14.
Daily low temperatures are around 76°F, rarely falling below 73°F or exceeding 78°F.
For reference, on May 27, the hottest day of the year, temperatures in San Pedro Cacahuatepec typically range from 76°F to 90°F, while on March 9, the coldest day of the year, they range from 70°F to 87°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
Ceará Mirim, Brazil (4,657 miles away); Mahalina, Madagascar (10,323 miles); and Waingapu, Indonesia (9,721 miles) are the far-away foreign places with temperatures most similar to San Pedro Cacahuatepec (view comparison).
The month of September in San Pedro Cacahuatepec experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 91% throughout the month. The highest chance of overcast or mostly cloudy conditions is 93% on September 16.
The clearest day of the month is September 30, with clear, mostly clear, or partly cloudy conditions 10% of the time.
For reference, on September 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 93%, while on March 1, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 73%.
Cloud Cover Categories in September
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In San Pedro Cacahuatepec, the chance of a wet day over the course of September is very rapidly decreasing, starting the month at 67% and ending it at 55%.
For reference, the year's highest daily chance of a wet day is 69% on September 12, and its lowest chance is 1% on March 29.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in San Pedro Cacahuatepec is rapidly decreasing, starting the month at 8.6 inches, when it rarely exceeds 15.0 inches or falls below 3.7 inches, and ending the month at 7.0 inches, when it rarely exceeds 11.3 inches or falls below 3.2 inches.
The highest average 31-day accumulation is 8.8 inches on September 9.
Average Monthly Rainfall in September
Over the course of September in San Pedro Cacahuatepec, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 27 minutes, implying an average daily decrease of 56 seconds, and weekly decrease of 6 minutes, 31 seconds.
The shortest day of the month is September 30, with 11 hours, 60 minutes of daylight and the longest day is September 1, with 12 hours, 27 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in San Pedro Cacahuatepec is 7:25 AM on September 1 and the latest sunrise is 3 minutes later at 7:28 AM on September 30.
The latest sunset is 7:51 PM on September 1 and the earliest sunset is 24 minutes earlier at 7:28 PM on September 30.
Daylight saving time is observed in San Pedro Cacahuatepec 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 7:06 AM and sets 13 hours, 8 minutes later, at 8:14 PM, while on December 21, the shortest day of the year, it rises at 7:02 AM and sets 11 hours, 8 minutes later, at 6:10 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in September
The chance that a given day will be muggy in San Pedro Cacahuatepec is essentially constant during September, remaining around 100% throughout.
For reference, on August 10, the muggiest day of the year, there are muggy conditions 100% of the time, while on March 9, the least muggy day of the year, there are muggy conditions 74% of the time.
Humidity Comfort Levels in September
The average hourly wind speed in San Pedro Cacahuatepec is essentially constant during September, remaining within 0.2 miles per hour of 6.6 miles per hour throughout.
For reference, on September 13, the windiest day of the year, the daily average wind speed is 6.8 miles per hour, while on November 30, the calmest day of the year, the daily average wind speed is 5.3 miles per hour.
The highest daily average wind speed during September is 6.8 miles per hour on September 14.
Average Wind Speed in September
Wind Direction in September
San Pedro Cacahuatepec 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 San Pedro Cacahuatepec is essentially constant during September, remaining around 86°F throughout.
Average Water Temperature in September
Temperatures in San Pedro Cacahuatepec 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 San Pedro Cacahuatepec are rapidly increasing during September, increasing by 896°F, from 7,283°F to 8,179°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in San Pedro Cacahuatepec is essentially constant during September, remaining within 0.1 kWh of 4.5 kWh throughout.
Average Daily Incident Shortwave Solar Energy in September
For the purposes of this report, the geographical coordinates of San Pedro Cacahuatepec are 16.815 deg latitude, -99.668 deg longitude, and 174 ft elevation.
The topography within 2 miles of San Pedro Cacahuatepec contains only modest variations in elevation, with a maximum elevation change of 436 feet and an average elevation above sea level of 201 feet. Within 10 miles contains only modest variations in elevation (2,080 feet). Within 50 miles contains large variations in elevation (10,978 feet).
The area within 2 miles of San Pedro Cacahuatepec is covered by cropland (54%) and trees (46%), within 10 miles by cropland (50%) and trees (29%), and within 50 miles by water (47%) and trees (27%).
This report illustrates the typical weather in San Pedro Cacahuatepec 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 is only a single weather station, General Juan N. Álvarez International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of San Pedro Cacahuatepec.
At a distance of 11 kilometers from San Pedro Cacahuatepec, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and San Pedro Cacahuatepec according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
Time zones for aiports and weather stations are provided by AskGeo.com .