Average Weather in December in Colonia San Juan Mexico
Daily high temperatures are around 72°F, rarely falling below 64°F or exceeding 78°F.
Daily low temperatures decrease by 2°F, from 45°F to 43°F, rarely falling below 36°F or exceeding 50°F.
For reference, on April 26, the hottest day of the year, temperatures in Colonia San Juan typically range from 54°F to 81°F, while on January 7, the coldest day of the year, they range from 43°F to 71°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 Colonia San Juan experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 46% throughout the month.
The clearest day of the month is December 28, with clear, mostly clear, or partly cloudy conditions 55% of the time.
For reference, on September 15, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 85%, while on February 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%.
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 Colonia San Juan, the chance of a wet day over the course of December is essentially constant, remaining around 5% throughout.
For reference, the year's highest daily chance of a wet day is 71% on July 2, and its lowest chance is 3% on December 23.
Probability of Precipitation in December
The average sliding 31-day rainfall during December in Colonia San Juan is essentially constant, remaining about 0.3 inches throughout, and rarely exceeding 0.9 inches or falling below -0.0 inches.
The lowest average 31-day accumulation is 0.2 inches on December 18.
Average Monthly Rainfall in December
Over the course of December in Colonia San Juan, the length of the day is essentially constant. The shortest day of the month is December 21, with 10 hours, 55 minutes of daylight and the longest day is December 1, with 11 hours, 0 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Colonia San Juan is 6:56 AM on December 1 and the latest sunrise is 16 minutes later at 7:12 AM on December 31.
The earliest sunset is 5:56 PM on December 1 and the latest sunset is 12 minutes later at 6:08 PM on December 31.
Daylight saving time is observed in Colonia San Juan 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 6:58 AM and sets 13 hours, 21 minutes later, at 8:19 PM, while on December 21, the shortest day of the year, it rises at 7:08 AM and sets 10 hours, 55 minutes later, at 6:02 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 Colonia San Juan is essentially constant during December, remaining around 0% throughout.
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 Colonia San Juan is essentially constant during December, remaining within 0.1 miles per hour of 5.9 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 1, the calmest day of the year, the daily average wind speed is 5.8 miles per hour.
The lowest daily average wind speed during December is 5.8 miles per hour on December 2.
Average Wind Speed in December
The hourly average wind direction in Colonia San Juan throughout December is predominantly from the east, with a peak proportion of 35% on December 1.
Wind Direction in December
While it does not do so every year, freezing temperatures are seen in Colonia San Juan over some winters. The day least likely to be in the growing season is December 29, with a 70% chance.
Time Spent in Various Temperature Bands and the Growing Season in December
The average accumulated growing degree days in Colonia San Juan are increasing during December, increasing by 241°F, from 4,378°F to 4,619°F, over the course of the month.
Growing Degree Days in December
The average daily incident shortwave solar energy in Colonia San Juan is essentially constant during December, remaining within 0.1 kWh of 4.9 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 4.8 kWh on December 21.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Colonia San Juan are 20.190 deg latitude, -99.283 deg longitude, and 6,581 ft elevation.
The topography within 2 miles of Colonia San Juan contains significant variations in elevation, with a maximum elevation change of 673 feet and an average elevation above sea level of 6,604 feet. Within 10 miles contains significant variations in elevation (3,333 feet). Within 50 miles also contains extreme variations in elevation (10,682 feet).
The area within 2 miles of Colonia San Juan is covered by cropland (75%) and shrubs (20%), within 10 miles by cropland (52%) and shrubs (25%), and within 50 miles by shrubs (32%) and cropland (24%).
This report illustrates the typical weather in Colonia San Juan, 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 Colonia San Juan.
For each station, the records are corrected for the elevation difference between that station and Colonia San Juan 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 Colonia San Juan is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Colonia San Juan and a given station.
The stations contributing to this reconstruction are: Benito Juárez International Airport (30%, 87 kilometers, south); Tulancingo (26%, 96 kilometers, east); Licenciado Adolfo López Mateos International Airport (21%, 100 kilometers, south); and Querétaro Intercontinental Airport (23%, 106 kilometers, northwest).
Time zones for airports and weather stations are provided by AskGeo.com .