Average Weather in December in San Pedro Apatlaco Mexico
Daily high temperatures are around 82°F, rarely falling below 76°F or exceeding 87°F.
Daily low temperatures decrease by 2°F, from 54°F to 52°F, rarely falling below 47°F or exceeding 60°F.
For reference, on April 18, the hottest day of the year, temperatures in San Pedro Apatlaco typically range from 63°F to 90°F, while on January 12, the coldest day of the year, they range from 52°F to 81°F.
Average High and Low Temperature in December
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. 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 December
The month of December in San Pedro Apatlaco experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 42% throughout the month.
The clearest day of the month is December 14, with clear, mostly clear, or partly cloudy conditions 59% of the time.
For reference, on September 14, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 88%, while on February 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 70%.
Cloud Cover Categories in December
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 San Pedro Apatlaco, the chance of a wet day over the course of December is essentially constant, remaining around 2% throughout.
For reference, the year's highest daily chance of a wet day is 77% on August 27, and its lowest chance is 2% on December 9.
Probability of Precipitation in December
The average sliding 31-day rainfall during December in San Pedro Apatlaco is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.6 inches.
The lowest average 31-day accumulation is 0.1 inches on December 12.
Average Monthly Rainfall in December
Over the course of December in San Pedro Apatlaco, the length of the day is essentially constant. The shortest day of the month is December 21, with 11 hours, 0 minutes of daylight and the longest day is December 1, with 11 hours, 5 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in San Pedro Apatlaco is 6:52 AM on December 1 and the latest sunrise is 16 minutes later at 7:08 AM on December 31.
The earliest sunset is 5:57 PM on December 1 and the latest sunset is 12 minutes later at 6:09 PM on December 31.
Daylight saving time is observed in San Pedro Apatlaco during 2021, but it neither starts nor ends during December, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 6:59 AM and sets 13 hours, 16 minutes later, at 8:15 PM, while on December 21, the shortest day of the year, it rises at 7:04 AM and sets 11 hours, 0 minutes later, at 6:04 PM.
Sunrise & Sunset with Twilight in December
The figure below presents a compact representation of key lunar data for December 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 December
The chance that a given day will be muggy in San Pedro Apatlaco is essentially constant during December, remaining around 0% throughout.
For reference, on June 16, the muggiest day of the year, there are muggy conditions 1% of the time, while on November 21, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in December
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in San Pedro Apatlaco is essentially constant during December, remaining within 0.1 miles per hour of 5.2 miles per hour throughout.
For reference, on March 13, the windiest day of the year, the daily average wind speed is 5.9 miles per hour, while on September 12, the calmest day of the year, the daily average wind speed is 4.5 miles per hour.
Average Wind Speed in December
The hourly average wind direction in San Pedro Apatlaco throughout December is predominantly from the east, with a peak proportion of 33% on December 31.
Wind Direction in December
Temperatures in San Pedro Apatlaco 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 December
The average accumulated growing degree days in San Pedro Apatlaco are rapidly increasing during December, increasing by 518°F, from 7,394°F to 7,913°F, over the course of the month.
Growing Degree Days in December
The average daily incident shortwave solar energy in San Pedro Apatlaco is essentially constant during December, remaining within 0.1 kWh of 5.1 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 5.0 kWh on December 23.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of San Pedro Apatlaco are 18.793 deg latitude, -98.960 deg longitude, and 4,236 ft elevation.
The topography within 2 miles of San Pedro Apatlaco contains only modest variations in elevation, with a maximum elevation change of 469 feet and an average elevation above sea level of 4,194 feet. Within 10 miles contains only modest variations in elevation (2,510 feet). Within 50 miles contains large variations in elevation (15,696 feet).
The area within 2 miles of San Pedro Apatlaco is covered by cropland (77%) and artificial surfaces (23%), within 10 miles by cropland (77%) and trees (16%), and within 50 miles by cropland (39%) and trees (36%).
This report illustrates the typical weather in San Pedro Apatlaco, 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 San Pedro Apatlaco.
For each station, the records are corrected for the elevation difference between that station and San Pedro Apatlaco 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 San Pedro Apatlaco is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between San Pedro Apatlaco and a given station.
The stations contributing to this reconstruction are: Benito Juárez International Airport (38%, 73 kilometers, north); Hermanos Serdán International Airport (37%, 74 kilometers, northeast); and Licenciado Adolfo López Mateos International Airport (25%, 88 kilometers, northwest).
Time zones for airports and weather stations are provided by AskGeo.com .