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September Weather in Valle de Allende Mexico

Daily high temperatures decrease by 2°F, from 83°F to 81°F, rarely falling below 74°F or exceeding 89°F.

Daily low temperatures decrease by 5°F, from 61°F to 56°F, rarely falling below 51°F or exceeding 64°F.

For reference, on June 4, the hottest day of the year, temperatures in Valle de Allende typically range from 62°F to 92°F, while on January 7, the coldest day of the year, they range from 37°F to 66°F.

Average High and Low Temperature in September in Valle de Allende

Average High and Low Temperature in September in Valle de AllendeSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303040°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°FAugOctSep 183°FSep 183°F61°F61°FSep 3081°FSep 3081°F56°F56°FSep 1182°FSep 1182°F60°F60°FSep 2182°FSep 2182°F58°F58°F
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 hourly average temperatures for the quarter of the year centered on September. 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 September in Valle de Allende

Average Hourly Temperature in September in Valle de AllendeSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAugOctcoldcoolcoolcomfortablecomfortablecomfortablewarmhot
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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Kimberley, South Africa (9,422 miles away) is the far-away foreign place with temperatures most similar to Valle de Allende (view comparison).

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The month of September in Valle de Allende experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 54% to 40%.

The clearest day of the month is September 30, with clear, mostly clear, or partly cloudy conditions 61% of the time.

For reference, on August 4, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 56%, while on June 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 78%.

Cloud Cover Categories in September in Valle de Allende

Cloud Cover Categories in September in Valle de AllendeSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOctSep 146%Sep 146%Sep 3061%Sep 3061%Sep 1147%Sep 1147%Sep 2154%Sep 2154%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Valle de Allende, the chance of a wet day over the course of September is very rapidly decreasing, starting the month at 38% and ending it at 19%.

For reference, the year's highest daily chance of a wet day is 44% on August 1, and its lowest chance is 2% on April 3.

Probability of Precipitation in September in Valle de Allende

Probability of Precipitation in September in Valle de AllendeSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%45%45%AugOctSep 138%Sep 138%Sep 3019%Sep 3019%Sep 1133%Sep 1133%Sep 2126%Sep 2126%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).

Rainfall

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 September in Valle de Allende is rapidly decreasing, starting the month at 3.0 inches, when it rarely exceeds 6.4 inches or falls below 0.7 inches, and ending the month at 1.6 inches, when it rarely exceeds 3.6 inches or falls below 0.2 inches.

Average Monthly Rainfall in September in Valle de Allende

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 snowfall.

Over the course of September in Valle de Allende, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 45 minutes, implying an average daily decrease of 1 minute, 34 seconds, and weekly decrease of 10 minutes, 58 seconds.

The shortest day of the month is September 30, with 11 hours, 54 minutes of daylight and the longest day is September 1, with 12 hours, 40 minutes of daylight.

Hours of Daylight and Twilight in September in Valle de Allende

Hours of Daylight and Twilight in September in Valle de AllendeSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2212 hr, 8 minSep 2212 hr, 8 minnightnightdaydaySep 112 hr, 40 minSep 112 hr, 40 min
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 of the month in Valle de Allende is 6:41 AM on September 1 and the latest sunrise is 13 minutes later at 6:53 AM on September 30.

The latest sunset is 7:20 PM on September 1 and the earliest sunset is 33 minutes earlier at 6:48 PM on September 30.

Daylight saving time is not observed in Valle de Allende during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 6:08 AM and sets 13 hours, 50 minutes later, at 7:58 PM, while on December 21, the shortest day of the year, it rises at 7:46 AM and sets 10 hours, 27 minutes later, at 6:13 PM.

Sunrise & Sunset with Twilight in September in Valle de Allende

Sunrise & Sunset with Twilight in September in Valle de AllendeSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMAugOct6:41 AM6:41 AMSep 17:20 PMSep 17:20 PM6:53 AM6:53 AMSep 306:48 PMSep 306:48 PM6:45 AM6:45 AMSep 117:09 PMSep 117:09 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of September. 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 figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in September in Valle de Allende

Solar Elevation and Azimuth in September in Valle de AllendeSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAugOct0010102020203030404050506070800001010202030303040405050606070
northeastsouthwest
Solar elevation and azimuth over the course of September 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for September 2024. 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 September in Valle de Allende

Moon Rise, Set & Phases in September in Valle de AllendeSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctAug 45:14 AMAug 45:14 AMAug 1912:26 PMAug 1912:26 PMSep 27:56 PMSep 27:56 PMSep 178:35 PMSep 178:35 PMOct 212:50 PMOct 212:50 PMOct 175:27 AMOct 175:27 AM6:30 AM6:30 AM8:19 PM8:19 PM7:13 PM7:13 PM6:20 AM6:20 AM6:15 AM6:15 AM7:23 PM7:23 PM7:00 PM7:00 PM7:20 AM7:20 AM6:46 AM6:46 AM6:48 PM6:48 PM6:04 PM6:04 PM7:11 AM7:11 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Sep 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
2%5:20 AMENE6:53 PMWNW-12:09 PMS249,263 mi
2
0%6:15 AMENE7:23 PMW-12:51 PMS250,640 mi
3
0%7:08 AME7:50 PMW-1:31 PMS251,654 mi
4
3%7:59 AME8:17 PMW-2:09 PMS252,259 mi
5
7%8:50 AME8:44 PMW-2:48 PMS252,391 mi
6
13%9:42 AMESE9:12 PMWSW-3:27 PMS251,976 mi
7
20%10:35 AMESE9:43 PMWSW-4:09 PMS250,938 mi
8
28%11:30 AMESE10:18 PMWSW-4:53 PMS249,224 mi
9
38%12:27 PMESE10:58 PMWSW-5:42 PMS246,814 mi
10
48%1:26 PMESE11:45 PMWSW-6:35 PMS243,744 mi
11
50%2:25 PMESE--7:32 PMS240,126 mi
12
69%-12:39 AMWSW3:22 PMESE8:31 PMS236,154 mi
13
79%-1:41 AMWSW4:15 PMESE9:31 PMS232,110 mi
14
88%-2:47 AMWSW5:02 PMESE10:29 PMS228,336 mi
15
95%-3:56 AMWSW5:45 PMESE11:25 PMS225,199 mi
16
97%-5:05 AMWSW6:23 PMESE--
17
100%-6:13 AMW7:00 PME12:18 AMS223,024 mi
18
100%-7:20 AMW7:35 PME1:09 AMS222,049 mi
19
98%-8:28 AMW8:12 PMENE2:00 AMS222,368 mi
20
93%-9:37 AMWNW8:52 PMENE2:51 AMS223,921 mi
21
85%-10:46 AMWNW9:35 PMENE3:45 AMS226,505 mi
22
75%-11:55 AMWNW10:24 PMENE4:42 AMS229,821 mi
23
64%-1:01 PMWNW11:19 PMENE5:41 AMN233,528 mi
24
50%-2:02 PMWNW-6:40 AMN237,301 mi
25
42%12:17 AMENE2:56 PMWNW-7:38 AMN240,876 mi
26
32%1:18 AMENE3:42 PMWNW-8:32 AMS244,065 mi
27
22%2:17 AMENE4:22 PMWNW-9:22 AMS246,763 mi
28
15%3:15 AMENE4:56 PMWNW-10:08 AMS248,928 mi
29
8%4:10 AMENE5:26 PMWNW-10:51 AMS250,563 mi
30
4%5:03 AME5:54 PMW-11:31 AMS251,698 mi

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 in Valle de Allende is essentially constant during September, remaining around 0% throughout.

For reference, on July 31, the muggiest day of the year, there are muggy conditions 0% 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 September in Valle de Allende

Humidity Comfort Levels in September in Valle de AllendeSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AugOctSep 10%Sep 10%Sep 300%Sep 300%Sep 110%Sep 110%Sep 210%Sep 210%humidhumidcomfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 Valle de Allende is essentially constant during September, remaining within 0.1 miles per hour of 7.1 miles per hour throughout.

For reference, on March 25, the windiest day of the year, the daily average wind speed is 9.5 miles per hour, while on October 16, the calmest day of the year, the daily average wind speed is 6.9 miles per hour.

The highest daily average wind speed during September is 7.2 miles per hour on September 7.

Average Wind Speed in September in Valle de Allende

Average Wind Speed in September in Valle de AllendeSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mphAugOctSep 77.2 mphSep 77.2 mphSep 307.0 mphSep 307.0 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Valle de Allende throughout September is predominantly from the east, with a peak proportion of 62% on September 1.

Wind Direction in September in Valle de Allende

Wind Direction in September in Valle de AllendeEWSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%AugOctwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

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).

The growing season in Valle de Allende typically lasts for 9.2 months (279 days), from around February 27 to around December 2, rarely starting before January 26 or after March 27, and rarely ending before November 11 or after December 24.

The month of September in Valle de Allende is reliably fully within the growing season.

Time Spent in Various Temperature Bands and the Growing Season in September in Valle de Allende

Time Spent in Various Temperature Bands and the Growing Season in September in Valle de Allendegrowing seasongrowing seasongrowing seasonSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOct100%Sep 16100%Sep 16coldcoolcomfortablewarmhotvery cold
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 percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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 in Valle de Allende are rapidly increasing during September, increasing by 569°F, from 4,122°F to 4,691°F, over the course of the month.

Growing Degree Days in September in Valle de Allende

Growing Degree Days in September in Valle de AllendeSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303,800°F3,800°F4,000°F4,000°F4,200°F4,200°F4,400°F4,400°F4,600°F4,600°F4,800°F4,800°F5,000°F5,000°FAugOctSep 14,122°FSep 14,122°FSep 304,691°FSep 304,691°FSep 114,331°FSep 114,331°F
The average growing degree days accumulated over the course of September, with 25th to 75th and 10th to 90th percentile bands.

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 in Valle de Allende is essentially constant during September, remaining within 0.2 kWh of 6.0 kWh throughout.

Average Daily Incident Shortwave Solar Energy in September in Valle de Allende

Average Daily Incident Shortwave Solar Energy in September in Valle de AllendeSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhAugOctSep 16.2 kWhSep 16.2 kWhSep 305.8 kWhSep 305.8 kWhSep 116.0 kWhSep 116.0 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 Valle de Allende are 26.935 deg latitude, -105.393 deg longitude, and 5,262 ft elevation.

The topography within 2 miles of Valle de Allende contains only modest variations in elevation, with a maximum elevation change of 302 feet and an average elevation above sea level of 5,319 feet. Within 10 miles contains only modest variations in elevation (1,148 feet). Within 50 miles contains very significant variations in elevation (5,922 feet).

The area within 2 miles of Valle de Allende is covered by grassland (54%) and shrubs (46%), within 10 miles by grassland (67%) and shrubs (32%), and within 50 miles by shrubs (52%) and grassland (39%).

This report illustrates the typical weather in Valle de Allende, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Valle de Allende is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.

The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Valle de Allende, according to the International Standard Atmosphere .

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.

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 © OpenStreetMap contributors.

Disclaimer

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.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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