Average Weather in January in San Juan Ihualtepec Mexico
Daily high temperatures increase by 2°F, from 76°F to 78°F, rarely falling below 71°F or exceeding 82°F.
Daily low temperatures are around 46°F, rarely falling below 41°F or exceeding 51°F. The lowest daily average low temperature is 46°F on January 13.
For reference, on April 17, the hottest day of the year, temperatures in San Juan Ihualtepec typically range from 54°F to 86°F, while on January 12, the coldest day of the year, they range from 46°F to 76°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 Juan Ihualtepec experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 41% to 32%.
The clearest day of the month is January 31, with clear, mostly clear, or partly cloudy conditions 68% of the time.
For reference, on June 30, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 90%, while on February 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%.
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 Juan Ihualtepec, the chance of a wet day over the course of January is essentially constant, remaining around 4% throughout.
For reference, the year's highest daily chance of a wet day is 75% on September 3, and its lowest chance is 1% on December 8.
Probability of Precipitation in January
The average sliding 31-day rainfall during January in San Juan Ihualtepec is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 0.9 inches or falling below -0.0 inches.
The highest average 31-day accumulation is 0.3 inches on January 31.
Average Monthly Rainfall in January
Over the course of January in San Juan Ihualtepec, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 16 minutes, implying an average daily increase of 33 seconds, and weekly increase of 3 minutes, 50 seconds.
The shortest day of the month is January 1, with 11 hours, 6 minutes of daylight and the longest day is January 31, with 11 hours, 22 minutes of daylight.
Hours of Daylight and Twilight in January
The earliest sunrise of the month in San Juan Ihualtepec is 7:04 AM on January 1 and the latest sunrise is 3 minutes later at 7:07 AM on January 18.
The earliest sunset is 6:09 PM on January 1 and the latest sunset is 18 minutes later at 6:27 PM on January 31.
Daylight saving time is observed in San Juan Ihualtepec 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 6:59 AM and sets 13 hours, 12 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, 4 minutes later, at 6:03 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 Juan Ihualtepec is essentially constant during January, remaining around 0% throughout.
For reference, on June 12, the muggiest day of the year, there are muggy conditions 2% 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 January
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in San Juan Ihualtepec is essentially constant during January, remaining within 0.1 miles per hour of 5.9 miles per hour throughout.
For reference, on March 9, the windiest day of the year, the daily average wind speed is 6.1 miles per hour, while on June 3, the calmest day of the year, the daily average wind speed is 4.4 miles per hour.
Average Wind Speed in January
The hourly average wind direction in San Juan Ihualtepec throughout January is predominantly from the east, with a peak proportion of 62% on January 1.
Wind Direction in January
Temperatures in San Juan Ihualtepec 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 Juan Ihualtepec are increasing during January, increasing by 317°F, from 0°F to 317°F, over the course of the month.
Growing Degree Days in January
The average daily incident shortwave solar energy in San Juan Ihualtepec is gradually increasing during January, rising by 0.6 kWh, from 5.1 kWh to 5.7 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 Juan Ihualtepec are 17.740 deg latitude, -98.289 deg longitude, and 5,869 ft elevation.
The topography within 2 miles of San Juan Ihualtepec contains very significant variations in elevation, with a maximum elevation change of 1,549 feet and an average elevation above sea level of 5,925 feet. Within 10 miles contains very significant variations in elevation (3,287 feet). Within 50 miles also contains extreme variations in elevation (8,888 feet).
The area within 2 miles of San Juan Ihualtepec is covered by shrubs (80%) and cropland (19%), within 10 miles by shrubs (52%) and cropland (37%), and within 50 miles by shrubs (39%) and trees (38%).
This report illustrates the typical weather in San Juan Ihualtepec, 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 Juan Ihualtepec.
At a distance of 190 kilometers from San Juan Ihualtepec, further than our threshold of 150 kilometers, this station is deemed insufficiently nearby to be relied upon as our primary source for temperature and dew point records. Consequently, the station records are blended with interpolated values from NASA's MERRA-2 satellite-era reanalysis , and both are corrected for elevation differences according to the International Standard Atmosphere .
The weight assigned to the MERRA-2 value depends on the distance from San Juan Ihualtepec to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 45%, making the weight assigned to the weather station 55%.
Time zones for airports and weather stations are provided by AskGeo.com .