January Weather at Guadalajara International Airport Mexico
Daily high temperatures are around 76°F, rarely falling below 69°F or exceeding 82°F. The lowest daily average high temperature is 75°F on January 5.
Daily low temperatures are around 42°F, rarely falling below 34°F or exceeding 50°F. The lowest daily average low temperature is 42°F on January 8.
For reference, on May 17, the hottest day of the year, temperatures at Guadalajara International Airport typically range from 58°F to 89°F, while on January 8, the coldest day of the year, they range from 42°F to 75°F.
Average High and Low Temperature in January at Guadalajara International Airport
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 at Guadalajara International Airport
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
Capinota, Bolivia (3,648 miles away); Lusaka, Zambia (9,257 miles); and Sanaa, Yemen (9,130 miles) are the far-away foreign places with temperatures most similar to Guadalajara International Airport (view comparison).
The month of January at Guadalajara International Airport experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 48% to 41%.
The clearest day of the month is January 31, with clear, mostly clear, or partly cloudy conditions 59% of the time.
For reference, on September 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 87%, while on March 1, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 63%.
Cloud Cover Categories in January at Guadalajara International Airport
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. At Guadalajara International Airport, the chance of a wet day over the course of January is essentially constant, remaining around 6% throughout.
For reference, the year's highest daily chance of a wet day is 77% on July 13, and its lowest chance is 1% on April 6.
Probability of Precipitation in January at Guadalajara International Airport
To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during January at Guadalajara International Airport is essentially constant, remaining about 0.6 inches throughout, and rarely exceeding 2.3 inches or falling below -0.0 inches.
The highest average 31-day accumulation is 0.7 inches on January 24.
Average Monthly Rainfall in January at Guadalajara International Airport
Over the course of January at Guadalajara International Airport, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 19 minutes, implying an average daily increase of 39 seconds, and weekly increase of 4 minutes, 31 seconds.
The shortest day of the month is January 1, with 10 hours, 55 minutes of daylight and the longest day is January 31, with 11 hours, 14 minutes of daylight.
Hours of Daylight and Twilight in January at Guadalajara International Airport
The earliest sunrise of the month at Guadalajara International Airport is 7:29 AM on January 1 and the latest sunrise is 2 minutes, 28 seconds later at 7:31 AM on January 15.
The earliest sunset is 6:24 PM on January 1 and the latest sunset is 19 minutes later at 6:44 PM on January 31.
Daylight saving time is observed at Guadalajara International Airport 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 7:13 AM and sets 13 hours, 23 minutes later, at 8:36 PM, while on December 21, the shortest day of the year, it rises at 7:24 AM and sets 10 hours, 53 minutes later, at 6:18 PM.
Sunrise & Sunset with Twilight in January at Guadalajara International Airport
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 at Guadalajara International Airport
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The chance that a given day will be muggy at Guadalajara International Airport is essentially constant during January, remaining around 0% throughout.
For reference, on June 22, 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 January at Guadalajara International Airport
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed at Guadalajara International Airport is essentially constant during January, remaining within 0.2 miles per hour of 5.4 miles per hour throughout.
For reference, on March 24, the windiest day of the year, the daily average wind speed is 6.1 miles per hour, while on July 26, the calmest day of the year, the daily average wind speed is 4.3 miles per hour.
Average Wind Speed in January at Guadalajara International Airport
The hourly average wind direction at Guadalajara International Airport throughout January is predominantly from the west, with a peak proportion of 41% on January 31.
Wind Direction in January at Guadalajara International Airport
Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).
While it does not do so every year, freezing temperatures are seen at Guadalajara International Airport over some winters. The day least likely to be in the growing season is January 9, with a 59% chance.
Time Spent in Various Temperature Bands and the Growing Season in January at Guadalajara International Airport
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.
The average accumulated growing degree days at Guadalajara International Airport are increasing during January, increasing by 302°F, from 0°F to 302°F, over the course of the month.
Growing Degree Days in January at Guadalajara International Airport
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy at Guadalajara International Airport is gradually increasing during January, rising by 0.8 kWh, from 4.6 kWh to 5.3 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in January at Guadalajara International Airport
For the purposes of this report, the geographical coordinates of Guadalajara International Airport are 20.522 deg latitude, -103.311 deg longitude, and 5,013 ft elevation.
The topography within 2 miles of Guadalajara International Airport contains only modest variations in elevation, with a maximum elevation change of 131 feet and an average elevation above sea level of 5,024 feet. Within 10 miles contains only modest variations in elevation (2,060 feet). Within 50 miles contains large variations in elevation (9,701 feet).
The area within 2 miles of Guadalajara International Airport is covered by cropland (87%), within 10 miles by cropland (62%) and artificial surfaces (25%), and within 50 miles by trees (39%) and cropland (37%).
This report illustrates the typical weather at Guadalajara International Airport, 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
Guadalajara International Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
In this case, the only station close and reliable enough to use as a fallback is Amado Nervo International Airport.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for airports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
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