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Average Weather in San Cayetano Mexico

In San Cayetano, the wet season is overcast, the dry season is partly cloudy, and it is warm year round. Over the course of the year, the temperature typically varies from 43°F to 87°F and is rarely below 38°F or above 93°F.


The hot season lasts for 2.2 months, from April 4 to June 12, with an average daily high temperature above 85°F. The hottest day of the year is May 12, with an average high of 87°F and low of 58°F.

The cool season lasts for 2.3 months, from November 26 to February 6, with an average daily high temperature below 77°F. The coldest day of the year is January 7, with an average low of 43°F and high of 74°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in San CayetanoJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMwarmhotcoldcoolcomfortablevery cold
The average hourly temperature, color coded into bands: 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. The shaded overlays indicate night and civil twilight.


In San Cayetano, 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 San Cayetano begins around October 27 and lasts for 7.5 months, ending around June 10. On February 23, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 65% of the time, and overcast or mostly cloudy 35% of the time.

The cloudier part of the year begins around June 10 and lasts for 4.5 months, ending around October 27. On September 15, the cloudiest day of the year, the sky is overcast or mostly cloudy 82% of the time, and clear, mostly clear, or partly cloudy 18% of the time.

Cloud Cover Categories

Cloud Cover Categories in San CayetanoclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Feb 2365%Feb 2365%Sep 1518%Sep 1518%Oct 2741%Oct 2741%Jun 1041%Jun 1041%clearovercastmostly clearpartly cloudymostly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.


A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in San Cayetano varies very significantly throughout the year.

The wetter season lasts 3.8 months, from June 6 to September 29, with a greater than 34% chance of a given day being a wet day. The chance of a wet day peaks at 65% on July 14.

The drier season lasts 8.2 months, from September 29 to June 6. The smallest chance of a wet day is 2% on December 12.

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 65% on July 14.

Daily Chance of Precipitation

Daily Chance of Precipitation in San CayetanowetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 1465%Jul 1465%Dec 122%Dec 122%Jun 634%Jun 634%Sep 2934%Sep 2934%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).


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. San Cayetano experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 5.9 months, from May 7 to November 3, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 6, with an average total accumulation of 4.8 inches.

The rainless period of the year lasts for 6.1 months, from November 3 to May 7. The least rain falls around December 11, with an average total accumulation of 0.1 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.


The length of the day in San Cayetano varies over the course of the year. In 2017, the shortest day is December 21, with 10 hours, 53 minutes of daylight; the longest day is June 20, with 13 hours, 23 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in San CayetanoJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2013 hr, 23 minJun 2013 hr, 23 minJun 2012 hr, 7 minSep 2212 hr, 7 minSep 2210 hr, 53 minDec 2110 hr, 53 minDec 21nightnightday
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 6:36 AM on April 1, and the latest sunrise is 1 hour, 7 minutes later at 7:43 AM on October 28. The earliest sunset is at 6:01 PM on November 25, and the latest sunset is 2 hours, 27 minutes later at 8:28 PM on July 5.

Daylight saving time (DST) is observed in San Cayetano 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

Sunrise & Sunset with Twilight and Daylight Saving Time in San CayetanoJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMApr 16:36 AMApr 16:36 AM8:28 PMJul 58:28 PMJul 5Nov 256:01 PMNov 256:01 PM7:43 AMOct 287:43 AMOct 28Apr 2DSTApr 2DSTDSTOct 29DSTOct 29daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.


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 San Cayetano, 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

Humidity Comfort Levels in San CayetanoJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Feb 70%Feb 70%Jul 160%Jul 160%humidhumiddrydrycomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: 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 in San Cayetano experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.3 months, from June 10 to October 19, with average wind speeds of more than 7.3 miles per hour. The windiest day of the year is September 25, with an average hourly wind speed of 7.9 miles per hour.

The calmer time of year lasts for 7.7 months, from October 19 to June 10. The calmest day of the year is December 22, with an average hourly wind speed of 6.6 miles per hour.

Average Wind Speed

Average Wind Speed in San CayetanowindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mphSep 257.9 mphSep 257.9 mphDec 226.6 mphDec 226.6 mphJun 107.3 mphJun 107.3 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in San Cayetano varies throughout the year.

The wind is most often from the west for 3.3 months, from February 1 to May 11, with a peak percentage of 45% on March 28. The wind is most often from the east for 8.6 months, from May 11 to February 1, with a peak percentage of 40% on January 1.

Wind Direction

Wind Direction in San CayetanoEWEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%eastwestsouthnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Solar Energy

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 some seasonal variation over the course of the year.

The brighter period of the year lasts for 3.0 months, from March 15 to June 14, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest day of the year is May 9, with an average of 7.5 kWh.

The darker period of the year lasts for 2.4 months, from November 14 to January 26, with an average daily incident shortwave energy per square meter below 5.3 kWh. The darkest day of the year is December 20, with an average of 4.7 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in San CayetanobrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhMay 97.5 kWhMay 97.5 kWhDec 204.7 kWhDec 204.7 kWhMar 156.9 kWhMar 156.9 kWhJun 146.9 kWhJun 146.9 kWhJan 265.3 kWhJan 265.3 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.


For the purposes of this report, the geographical coordinates of San Cayetano are 20.603 deg latitude, -100.819 deg longitude, and 5,801 ft elevation.

The topography within 2 miles of San Cayetano is essentially flat, with a maximum elevation change of 66 feet and an average elevation above sea level of 5,802 feet. Within 10 miles is essentially flat (2,139 feet). Within 50 miles contains large variations in elevation (5,472 feet).

The area within 2 miles of San Cayetano is covered by cropland (89%), within 10 miles by cropland (55%) and grassland (15%), and within 50 miles by trees (28%) and cropland (27%).

Data Sources

This report illustrates the typical weather in San Cayetano, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in San Cayetano.

For each station, the records are corrected for the elevation difference between that station and San Cayetano 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 San Cayetano is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between San Cayetano and a given station.

The stations contributing to this reconstruction are: Querétaro Intercontinental Airport (41%, 66 kilometers, east); Del Bajío International Airport (31%, 81 kilometers, northwest); and General Francisco J. Mujica International Airport (28%, 87 kilometers, south).

Other Data

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.


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.