Average Weather in September in Zimapan Mexico
Daily high temperatures are around 74°F, rarely falling below 67°F or exceeding 79°F.
Daily low temperatures decrease by 2°F, from 58°F to 55°F, rarely falling below 50°F or exceeding 61°F.
For reference, on May 10, the hottest day of the year, temperatures in Zimapan typically range from 57°F to 82°F, while on January 7, the coldest day of the year, they range from 42°F to 70°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
Cochabamba, Bolivia (3,469 miles away); Lalapanzi, Zimbabwe (9,185 miles); and Mbeya, Tanzania (9,205 miles) are the far-away foreign places with temperatures most similar to Zimapan (view comparison).
The month of September in Zimapan experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 80% to 76%. The highest chance of overcast or mostly cloudy conditions is 81% on September 15.
The clearest day of the month is September 30, with clear, mostly clear, or partly cloudy conditions 24% of the time.
For reference, on September 15, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 81%, while on March 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 64%.
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 Zimapan, the chance of a wet day over the course of September is very rapidly decreasing, starting the month at 56% and ending it at 44%.
For reference, the year's highest daily chance of a wet day is 60% on July 2, and its lowest chance is 6% on December 26.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Zimapan is decreasing, starting the month at 5.0 inches, when it rarely exceeds 8.5 inches or falls below 2.0 inches, and ending the month at 4.2 inches, when it rarely exceeds 7.7 inches or falls below 1.7 inches.
The highest average 31-day accumulation is 5.1 inches on September 12.
Average Monthly Rainfall in September
Over the course of September in Zimapan, 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, 10 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, 32 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Zimapan is 7:21 AM on September 1 and the latest sunrise is 7 minutes later at 7:28 AM on September 30.
The latest sunset is 7:53 PM on September 1 and the earliest sunset is 27 minutes earlier at 7:26 PM on September 30.
Daylight saving time is observed in Zimapan during 2019, 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 6:57 AM and sets 13 hours, 24 minutes later, at 8:21 PM, while on December 22, the shortest day of the year, it rises at 7:09 AM and sets 10 hours, 53 minutes later, at 6:02 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in September
The chance that a given day will be muggy in Zimapan is essentially constant during September, remaining around 0% throughout.
For reference, on May 25, 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.
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 Zimapan is essentially constant during September, remaining within 0.2 miles per hour of 6.7 miles per hour throughout.
For reference, on June 28, the windiest day of the year, the daily average wind speed is 7.4 miles per hour, while on December 17, the calmest day of the year, the daily average wind speed is 5.5 miles per hour.
Average Wind Speed in September
Wind Direction in September
While it does not do so every year, freezing temperatures are seen in Zimapan over some winters. The day least likely to be in the growing season is January 5, with a 61% chance.
Time Spent in Various Temperature Bands and the Growing Season in September
The average accumulated growing degree days in Zimapan are increasing during September, increasing by 419°F, from 3,458°F to 3,877°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Zimapan is essentially constant during September, remaining within 0.2 kWh of 6.1 kWh throughout.
Average Daily Incident Shortwave Solar Energy in September
For the purposes of this report, the geographical coordinates of Zimapan are 20.738 deg latitude, -99.382 deg longitude, and 5,938 ft elevation.
The topography within 2 miles of Zimapan contains very significant variations in elevation, with a maximum elevation change of 1,640 feet and an average elevation above sea level of 5,894 feet. Within 10 miles contains very significant variations in elevation (6,785 feet). Within 50 miles also contains extreme variations in elevation (10,226 feet).
The area within 2 miles of Zimapan is covered by shrubs (70%) and grassland (29%), within 10 miles by shrubs (71%) and trees (16%), and within 50 miles by trees (35%) and shrubs (34%).
This report illustrates the typical weather in Zimapan 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Zimapan.
For each station, the records are corrected for the elevation difference between that station and Zimapan 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 Zimapan is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Zimapan and a given station.
The stations contributing to this reconstruction are: Querétaro Intercontinental Airport (44%, 85 kilometers, west); Tulancingo (23%, 129 kilometers, southeast); Benito Juárez International Airport (18%, 149 kilometers, south); and Licenciado Adolfo López Mateos International Airport (15%, 157 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .