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  5. August

Average Weather in August at Sulphur Springs Municipal Airport Texas, United States

Daily high temperatures decrease by 2°F, from 95°F to 92°F, rarely falling below 85°F or exceeding 101°F. The highest daily average high temperature is 95°F on August 11.

Daily low temperatures decrease by 3°F, from 75°F to 72°F, rarely falling below 65°F or exceeding 79°F.

For reference, on August 11, the hottest day of the year, temperatures at Sulphur Springs Municipal Airport typically range from 74°F to 95°F, while on January 7, the coldest day of the year, they range from 37°F to 55°F.

Average High and Low Temperature in August

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 August. 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 August

Average Hourly Temperature in August at Sulphur Springs Municipal Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM4 AM8 AM12 PM4 PM8 PM12 AMJulSepcomfortablewarmhotcoolcomfortable
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.

Ar Rudayyif, Tunisia (5,651 miles away) and Açıkdere, Turkey (6,733 miles) are the far-away foreign places with temperatures most similar to Sulphur Springs Municipal Airport (view comparison).

Clouds

The month of August at Sulphur Springs Municipal Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 33% throughout the month.

The clearest day of the month is August 3, with clear, mostly clear, or partly cloudy conditions 68% of the time.

For reference, on February 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 48%, while on October 5, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 73%.

Cloud Cover Categories in August

Cloud Cover Categories in August at Sulphur Springs Municipal Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JulSepAug 168%Aug 168%Aug 3167%Aug 3167%Aug 1167%Aug 1167%Aug 2167%Aug 2167%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.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Sulphur Springs Municipal Airport, the chance of a wet day over the course of August is essentially constant, remaining around 20% throughout.

For reference, the year's highest daily chance of a wet day is 39% on May 15, and its lowest chance is 19% on August 24.

Probability of Precipitation in August

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 August at Sulphur Springs Municipal Airport is essentially constant, remaining about 1.9 inches throughout, and rarely exceeding 4.7 inches or falling below 0.2 inches.

The lowest average 31-day accumulation is 1.8 inches on August 14.

Average Monthly Rainfall in August

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 August at Sulphur Springs Municipal Airport, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 53 minutes, implying an average daily decrease of 1 minute, 47 seconds, and weekly decrease of 12 minutes, 27 seconds.

The shortest day of the month is August 31, with 12 hours, 53 minutes of daylight and the longest day is August 1, with 13 hours, 46 minutes of daylight.

Hours of Daylight and Twilight in August

Hours of Daylight and Twilight in August at Sulphur Springs Municipal Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrJulSepnightnightdaydayAug 113 hr, 46 minAug 113 hr, 46 minAug 3112 hr, 53 minAug 3112 hr, 53 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 at Sulphur Springs Municipal Airport is 6:35 AM on August 1 and the latest sunrise is 21 minutes later at 6:56 AM on August 31.

The latest sunset is 8:21 PM on August 1 and the earliest sunset is 33 minutes earlier at 7:48 PM on August 31.

Daylight saving time is observed at Sulphur Springs Municipal Airport during 2018, but it neither starts nor ends during August, so the entire month is in daylight saving time.

For reference, on June 21, the longest day of the year, the Sun rises at 6:13 AM and sets 14 hours, 21 minutes later, at 8:34 PM, while on December 21, the shortest day of the year, it rises at 7:21 AM and sets 9 hours, 58 minutes later, at 5:19 PM.

Sunrise & Sunset with Twilight in August

Sunrise & Sunset with Twilight in August at Sulphur Springs Municipal Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031312 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJulSep6:35 AM6:35 AMAug 18:21 PMAug 18:21 PM6:56 AM6:56 AMAug 317:48 PMAug 317:48 PM6:46 AM6:46 AMAug 168:06 PMAug 168:06 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of August. 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.

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 at Sulphur Springs Municipal Airport is rapidly decreasing during August, falling from 81% to 67% over the course of the month.

For reference, on July 6, the muggiest day of the year, there are muggy conditions 86% of the time, while on January 23, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in August

Humidity Comfort Levels in August at Sulphur Springs Municipal Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%10%20%30%40%50%60%70%80%90%100%JulSepAug 181%Aug 181%Aug 3167%Aug 3167%Aug 1178%Aug 1178%Aug 2174%Aug 2174%oppressiveoppressivemuggymuggyhumidhumiddrydrymiserablemiserable
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 at Sulphur Springs Municipal Airport is essentially constant during August, remaining within 0.1 miles per hour of 7.4 miles per hour throughout.

For reference, on April 2, the windiest day of the year, the daily average wind speed is 11.2 miles per hour, while on August 16, the calmest day of the year, the daily average wind speed is 7.2 miles per hour.

The lowest daily average wind speed during August is 7.2 miles per hour on August 16.

Average Wind Speed in August

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 at Sulphur Springs Municipal Airport throughout August is predominantly from the south, with a peak proportion of 60% on August 1.

Wind Direction in August

Wind Direction in August at Sulphur Springs Municipal Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%JulSepsoutheastnorthwest
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).

The growing season at Sulphur Springs Municipal Airport typically lasts for 8.5 months (260 days), from around March 6 to around November 22, rarely starting before February 8 or after April 1, and rarely ending before October 29 or after December 15.

The month of August at Sulphur Springs Municipal Airport is reliably fully within the growing season.

Time Spent in Various Temperature Bands and the Growing Season in August

Time Spent in Various Temperature Bands and the Growing Season in August at Sulphur Springs Municipal Airportgrowing seasongrowing seasongrowing season1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JulSep100%Aug 16100%Aug 16Jul 16100%Jul 16100%coolcomfortablewarmhotsweltering
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 at Sulphur Springs Municipal Airport are very rapidly increasing during August, increasing by 925°F, from 3,481°F to 4,406°F, over the course of the month.

Growing Degree Days in August

The average growing degree days accumulated over the course of August, 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 at Sulphur Springs Municipal Airport is gradually decreasing during August, falling by 0.8 kWh, from 6.6 kWh to 5.8 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in August

Average Daily Incident Shortwave Solar Energy in August at Sulphur Springs Municipal Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhJulSepAug 16.6 kWhAug 16.6 kWhAug 315.8 kWhAug 315.8 kWhAug 166.3 kWhAug 166.3 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.

Topography

For the purposes of this report, the geographical coordinates of Sulphur Springs Municipal Airport are 33.160 deg latitude, -95.621 deg longitude, and 472 ft elevation.

The topography within 2 miles of Sulphur Springs Municipal Airport is essentially flat, with a maximum elevation change of 95 feet and an average elevation above sea level of 468 feet. Within 10 miles is essentially flat (223 feet). Within 50 miles contains only modest variations in elevation (558 feet).

The area within 2 miles of Sulphur Springs Municipal Airport is covered by cropland (57%), water (19%), and artificial surfaces (14%), within 10 miles by cropland (85%), and within 50 miles by cropland (66%) and trees (14%).

Data Sources

This report illustrates the typical weather at Sulphur Springs Municipal Airport year round, 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

Sulphur Springs Municipal 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.

The stations on which we may fall back include but are not limited to Mineola/Quitman, Wood County Airport; Majors Airport; Cox Field Airport; Mount Pleasant, Mount Pleasant Regional Airport; Clarksville, Clarksville/Red River County-J D Trissell Field Airport; Terrell Municipal Airport; Gilmer, Fox Stephens Field - Gilmer Municipal Airport; and Tyler Pounds Field.

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.

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.