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September Weather in Altos del Rosario Colombia

Daily high temperatures decrease by 3°F, from 91°F to 88°F, rarely falling below 83°F or exceeding 99°F.

Daily low temperatures are around 77°F, rarely falling below 75°F or exceeding 79°F.

For reference, on March 15, the hottest day of the year, temperatures in Altos del Rosario typically range from 79°F to 100°F, while on December 29, the coldest day of the year, they range from 76°F to 93°F.

Average High and Low Temperature in September in Altos del Rosario

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 Altos del Rosario

Average Hourly Temperature in September in Altos del Rosario1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctNowNowwarmwarmhot
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.

Mandera, Kenya (7,952 miles away) is the far-away foreign place with temperatures most similar to Altos del Rosario (view comparison).

Compare Altos del Rosario to another city:

Clouds

The month of September in Altos del Rosario experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 90% throughout the month.

The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 12% of the time.

For reference, on May 6, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 93%, while on January 13, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 41%.

Cloud Cover Categories in September in Altos del Rosario

Cloud Cover Categories in September in Altos del Rosario181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOctSep 112%Sep 112%Sep 309%Sep 309%Sep 1110%Sep 1110%Sep 219%Sep 219%NowNowpartly cloudymostly cloudyovercastmostly clear
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.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Altos del Rosario, the chance of a wet day over the course of September is rapidly increasing, starting the month at 44% and ending it at 51%.

For reference, the year's highest daily chance of a wet day is 53% on October 19, and its lowest chance is 7% on January 20.

Probability of Precipitation in September in Altos del Rosario

Probability of Precipitation in September in Altos del Rosario181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%45%45%50%50%55%55%AugOctSep 144%Sep 144%Sep 3051%Sep 3051%Sep 1146%Sep 1146%Sep 2148%Sep 2148%NowNowrain
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 Altos del Rosario is increasing, starting the month at 3.8 inches, when it rarely exceeds 7.1 inches or falls below 1.1 inches, and ending the month at 4.5 inches, when it rarely exceeds 7.6 inches or falls below 1.5 inches.

Average Monthly Rainfall in September in Altos del Rosario

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.

Sun

Over the course of September in Altos del Rosario, the length of the day is essentially constant. The shortest day of the month is September 30, with 12 hours, 3 minutes of daylight and the longest day is September 1, with 12 hours, 17 minutes of daylight.

Hours of Daylight and Twilight in September in Altos del Rosario

Hours of Daylight and Twilight in September in Altos del Rosario181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2212 hr, 7 minSep 2212 hr, 7 minnightnightdaydaySep 112 hr, 17 minSep 112 hr, 17 minNowNow
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 latest sunrise of the month in Altos del Rosario is 5:48 AM on September 1 and the earliest sunrise is 3 minutes earlier at 5:45 AM on September 30.

The latest sunset is 6:04 PM on September 1 and the earliest sunset is 17 minutes earlier at 5:47 PM on September 30.

Daylight saving time is not observed in Altos del Rosario during 2021.

For reference, on June 21, the longest day of the year, the Sun rises at 5:39 AM and sets 12 hours, 38 minutes later, at 6:17 PM, while on December 21, the shortest day of the year, it rises at 6:06 AM and sets 11 hours, 37 minutes later, at 5:43 PM.

Sunrise & Sunset with Twilight in September in Altos del Rosario

Sunrise & Sunset with Twilight in September in Altos del Rosario1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMAugOct5:45 AM5:45 AMSep 305:47 PMSep 305:47 PM5:48 AM5:48 AMSep 16:04 PMSep 16:04 PM5:47 AM5:47 AMSep 115:59 PMSep 115:59 PMSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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.

Moon

The figure below presents a compact representation of key lunar data for September 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 September in Altos del Rosario

Moon Rise, Set & Phases in September in Altos del Rosario1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctAug 88:51 AMAug 88:51 AMAug 227:03 AMAug 227:03 AMSep 67:52 PMSep 67:52 PMSep 206:55 PMSep 206:55 PMOct 66:06 AMOct 66:06 AMOct 209:57 AMOct 209:57 AM5:48 AM5:48 AM6:40 PM6:40 PM5:51 PM5:51 PM5:53 AM5:53 AM5:25 AM5:25 AM6:05 PM6:05 PM5:58 PM5:58 PM6:15 AM6:15 AM5:51 AM5:51 AM6:12 PM6:12 PM5:14 PM5:14 PM5:42 AM5:42 AMNowNow
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.

Humidity

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 Altos del Rosario is essentially constant during September, remaining within 1% of 99% throughout.

For reference, on October 30, the muggiest day of the year, there are muggy conditions 100% of the time, while on February 9, the least muggy day of the year, there are muggy conditions 65% of the time.

Humidity Comfort Levels in September in Altos del Rosario

Humidity Comfort Levels in September in Altos del Rosario181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AugOctSep 198%Sep 198%Sep 30100%Sep 30100%Sep 1199%Sep 1199%Sep 2199%Sep 2199%NowNowmiserablemiserableoppressiveoppressivemuggymuggyhumidhumid
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.

Wind

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 Altos del Rosario is essentially constant during September, remaining around 1.4 miles per hour throughout.

For reference, on February 26, the windiest day of the year, the daily average wind speed is 2.2 miles per hour, while on May 31, the calmest day of the year, the daily average wind speed is 1.3 miles per hour.

The lowest daily average wind speed during September is 1.4 miles per hour on September 26.

Average Wind Speed in September in Altos del Rosario

Average Wind Speed in September in Altos del Rosario181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300.0 mph0.0 mph0.5 mph0.5 mph1.0 mph1.0 mph1.5 mph1.5 mph2.0 mph2.0 mphAugOctSep 261.4 mphSep 261.4 mphSep 11.4 mphSep 11.4 mphSep 111.4 mphSep 111.4 mphNowNow
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 Altos del Rosario throughout September is predominantly from the west, with a peak proportion of 58% on September 23.

Wind Direction in September in Altos del Rosario

Wind Direction in September in Altos del Rosario181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%AugOctNowNowwestsoutheastnorth
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).

Growing Season

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).

Temperatures in Altos del Rosario 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 September in Altos del Rosario

Time Spent in Various Temperature Bands and the Growing Season in September in Altos del Rosario181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%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 16NowNowwarmhotswelteringcomfortable
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 Altos del Rosario are very rapidly increasing during September, increasing by 907°F, from 7,963°F to 8,870°F, over the course of the month.

Growing Degree Days in September in Altos del Rosario

Growing Degree Days in September in Altos del Rosario181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930307,800°F7,800°F8,000°F8,000°F8,200°F8,200°F8,400°F8,400°F8,600°F8,600°F8,800°F8,800°F9,000°F9,000°FAugOctSep 17,963°FSep 17,963°FSep 308,870°FSep 308,870°FSep 118,280°FSep 118,280°FSep 218,590°FSep 218,590°FNowNow
The average growing degree days accumulated over the course of September, with 25th to 75th and 10th to 90th percentile bands.

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 in Altos del Rosario is gradually decreasing during September, falling by 0.6 kWh, from 4.5 kWh to 3.9 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in September in Altos del Rosario

Average Daily Incident Shortwave Solar Energy in September in Altos del Rosario181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhAugOctSep 14.5 kWhSep 14.5 kWhSep 303.9 kWhSep 303.9 kWhSep 114.3 kWhSep 114.3 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Altos del Rosario are 8.794 deg latitude, -74.166 deg longitude, and 82 ft elevation.

The topography within 2 miles of Altos del Rosario contains only modest variations in elevation, with a maximum elevation change of 463 feet and an average elevation above sea level of 74 feet. Within 10 miles contains only modest variations in elevation (1,995 feet). Within 50 miles contains large variations in elevation (8,353 feet).

The area within 2 miles of Altos del Rosario is covered by grassland (33%), trees (29%), water (21%), and shrubs (12%), within 10 miles by trees (42%) and water (23%), and within 50 miles by trees (43%) and grassland (22%).

Data Sources

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

Altos del Rosario 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 Altos del Rosario, 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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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.