Average Weather in Zacatecas Mexico
In Zacatecas, the summers are short and warm, the winters are short and cold, and it is dry and partly cloudy year round. Over the course of the year, the temperature typically varies from 33°F to 79°F and is rarely below 24°F or above 85°F.
The warm season lasts for 2.2 months, from April 16 to June 22, with an average daily high temperature above 76°F. The hottest day of the year is May 24, with an average high of 79°F and low of 50°F.
The cool season lasts for 2.3 months, from November 30 to February 9, with an average daily high temperature below 67°F. The coldest day of the year is January 8, with an average low of 33°F and high of 64°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, 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 Zacatecas, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Zacatecas begins around October 22 and lasts for 7.9 months, ending around June 20. On May 23, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 68% of the time, and overcast or mostly cloudy 32% of the time.
The cloudier part of the year begins around June 20 and lasts for 4.1 months, ending around October 22. On September 15, the cloudiest day of the year, the sky is overcast or mostly cloudy 76% of the time, and clear, mostly clear, or partly cloudy 24% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Zacatecas varies significantly throughout the year.
The wetter season lasts 3.6 months, from June 8 to September 27, with a greater than 22% chance of a given day being a wet day. The chance of a wet day peaks at 41% on July 15.
The drier season lasts 8.4 months, from September 27 to June 8. The smallest chance of a wet day is 1% on March 16.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 41% on July 15.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Zacatecas experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 9.7 months, from May 15 to March 5, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 8, with an average total accumulation of 3.3 inches.
The rainless period of the year lasts for 2.3 months, from March 5 to May 15. The least rain falls around March 29, with an average total accumulation of 0.1 inches.
Average Monthly Rainfall
The length of the day in Zacatecas varies over the course of the year. In 2017, the shortest day is December 21, with 10 hours, 44 minutes of daylight; the longest day is June 21, with 13 hours, 32 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:42 AM on April 1, and the latest sunrise is 1 hour, 11 minutes later at 7:53 AM on October 28. The earliest sunset is at 6:04 PM on November 27, and the latest sunset is 2 hours, 35 minutes later at 8:39 PM on July 2.
Daylight saving time (DST) is observed in Zacatecas during 2017, starting in the spring on April 2, lasting 6.8 months, and ending in the fall on October 29.
Sunrise & Sunset with Twilight and Daylight Saving Time
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 perceived humidity level in Zacatecas, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
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 in Zacatecas experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 3.7 months, from January 14 to May 6, with average wind speeds of more than 4.8 miles per hour. The windiest day of the year is March 19, with an average hourly wind speed of 5.5 miles per hour.
The calmer time of year lasts for 8.3 months, from May 6 to January 14. The calmest day of the year is October 26, with an average hourly wind speed of 4.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Zacatecas varies throughout the year.
The wind is most often from the east for 5.6 months, from May 27 to November 16, with a peak percentage of 77% on August 23. The wind is most often from the west for 6.4 months, from November 16 to May 27, with a peak percentage of 44% on January 1.
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 experiences significant seasonal variation over the course of the year.
The brighter period of the year lasts for 2.7 months, from March 29 to June 21, with an average daily incident shortwave energy per square meter above 7.2 kWh. The brightest day of the year is May 23, with an average of 7.9 kWh.
The darker period of the year lasts for 2.5 months, from November 15 to January 30, with an average daily incident shortwave energy per square meter below 5.2 kWh. The darkest day of the year is December 19, with an average of 4.5 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Zacatecas are 22.768 deg latitude, -102.581 deg longitude, and 7,999 ft elevation.
The topography within 2 miles of Zacatecas contains very significant variations in elevation, with a maximum elevation change of 1,066 feet and an average elevation above sea level of 8,071 feet. Within 10 miles also contains very significant variations in elevation (1,939 feet). Within 50 miles contains very significant variations in elevation (4,432 feet).
The area within 2 miles of Zacatecas is covered by grassland (50%) and artificial surfaces (43%), within 10 miles by grassland (87%), and within 50 miles by grassland (60%) and shrubs (26%).
This report illustrates the typical weather in Zacatecas, 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 Leobardo C. Ruiz International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Zacatecas.
At a distance of 18 kilometers from Zacatecas, 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 Zacatecas 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.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports 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.