Average Weather in January in San Luis Acatlán Mexico
Daily high temperatures are around 88°F, rarely falling below 84°F or exceeding 91°F.
Daily low temperatures are around 65°F, rarely falling below 60°F or exceeding 69°F. The lowest daily average low temperature is 64°F on January 25.
For reference, on May 8, the hottest day of the year, temperatures in San Luis Acatlán typically range from 71°F to 92°F, while on January 25, the coldest day of the year, they range from 64°F to 88°F.
Average High and Low Temperature in January
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. 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 January
The month of January in San Luis Acatlán experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 41% to 31%.
The clearest day of the month is January 31, with clear, mostly clear, or partly cloudy conditions 69% of the time.
For reference, on June 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 93%, while on February 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
Cloud Cover Categories in January
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 Luis Acatlán, the chance of a wet day over the course of January is essentially constant, remaining around 3% throughout.
For reference, the year's highest daily chance of a wet day is 70% on September 12, and its lowest chance is 1% on December 8.
Probability of Precipitation in January
The average sliding 31-day rainfall during January in San Luis Acatlán is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 1.0 inches or falling below -0.0 inches.
The highest average 31-day accumulation is 0.3 inches on January 24.
Average Monthly Rainfall in January
Over the course of January in San Luis Acatlán, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 15 minutes, implying an average daily increase of 31 seconds, and weekly increase of 3 minutes, 37 seconds.
The shortest day of the month is January 1, with 11 hours, 9 minutes of daylight and the longest day is January 31, with 11 hours, 25 minutes of daylight.
Hours of Daylight and Twilight in January
The earliest sunrise of the month in San Luis Acatlán is 7:04 AM on January 1 and the latest sunrise is 3 minutes later at 7:07 AM on January 20.
The earliest sunset is 6:13 PM on January 1 and the latest sunset is 17 minutes later at 6:30 PM on January 31.
Daylight saving time is observed in San Luis Acatlán during 2021, but it neither starts nor ends during January, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 7:02 AM and sets 13 hours, 8 minutes later, at 8:10 PM, while on December 21, the shortest day of the year, it rises at 6:59 AM and sets 11 hours, 8 minutes later, at 6:07 PM.
Sunrise & Sunset with Twilight in January
The figure below presents a compact representation of key lunar data for January 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 January
The chance that a given day will be muggy in San Luis Acatlán is decreasing during January, falling from 43% to 35% over the course of the month.
The lowest chance of a muggy day during January is 35% on January 27.
For reference, on September 12, the muggiest day of the year, there are muggy conditions 99% of the time, while on January 26, the least muggy day of the year, there are muggy conditions 35% of the time.
Humidity Comfort Levels in January
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in San Luis Acatlán is essentially constant during January, remaining within 0.2 miles per hour of 5.4 miles per hour throughout.
For reference, on March 31, the windiest day of the year, the daily average wind speed is 6.2 miles per hour, while on October 25, the calmest day of the year, the daily average wind speed is 4.8 miles per hour.
Average Wind Speed in January
The hourly average wind direction in San Luis Acatlán throughout January is predominantly from the south, with a peak proportion of 38% on January 24.
Wind Direction in January
San Luis Acatlán 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 Luis Acatlán is essentially constant during January, remaining around 83°F throughout.
Average Water Temperature in January
Temperatures in San Luis Acatlán 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 January
The average accumulated growing degree days in San Luis Acatlán are rapidly increasing during January, increasing by 743°F, from 1°F to 744°F, over the course of the month.
Growing Degree Days in January
The average daily incident shortwave solar energy in San Luis Acatlán is gradually increasing during January, rising by 0.7 kWh, from 4.9 kWh to 5.6 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in January
For the purposes of this report, the geographical coordinates of San Luis Acatlán are 16.809 deg latitude, -98.733 deg longitude, and 958 ft elevation.
The topography within 2 miles of San Luis Acatlán contains very significant variations in elevation, with a maximum elevation change of 1,158 feet and an average elevation above sea level of 1,012 feet. Within 10 miles contains very significant variations in elevation (5,761 feet). Within 50 miles also contains extreme variations in elevation (9,839 feet).
The area within 2 miles of San Luis Acatlán is covered by cropland (97%), within 10 miles by cropland (57%) and trees (41%), and within 50 miles by cropland (35%) and trees (34%).
This report illustrates the typical weather in San Luis Acatlán, 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 Luis Acatlán.
At a distance of 109 kilometers from San Luis Acatlán, 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 Luis Acatlán 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 airports and weather stations are provided by AskGeo.com .