Average Weather in August in Dilley Texas, United States
Daily high temperatures decrease by 3°F, from 98°F to 95°F, rarely falling below 89°F or exceeding 103°F. The highest daily average high temperature is 98°F on August 6.
Daily low temperatures are around 75°F, rarely falling below 71°F or exceeding 78°F. The highest daily average low temperature is 75°F on August 11.
For reference, on August 5, the hottest day of the year, temperatures in Dilley typically range from 75°F to 98°F, while on January 6, the coldest day of the year, they range from 44°F to 65°F.
Average High and Low Temperature in August
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
The month of August in Dilley experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 43% throughout the month. The highest chance of overcast or mostly cloudy conditions is 44% on August 10.
The clearest day of the month is August 31, with clear, mostly clear, or partly cloudy conditions 58% of the time.
For reference, on January 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 45%, while on June 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 77%.
Cloud Cover Categories in August
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Dilley, the chance of a wet day over the course of August is very rapidly increasing, starting the month at 14% and ending it at 25%.
For reference, the year's highest daily chance of a wet day is 28% on May 22, and its lowest chance is 9% on December 14.
Probability of Precipitation in August
The average sliding 31-day rainfall during August in Dilley is increasing, starting the month at 1.3 inches, when it rarely exceeds 3.8 inches or falls below 0.1 inches, and ending the month at 2.1 inches, when it rarely exceeds 4.9 inches or falls below 0.4 inches.
The lowest average 31-day accumulation is 1.3 inches on August 1.
Average Monthly Rainfall in August
Over the course of August in Dilley, 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, 29 seconds, and weekly decrease of 10 minutes, 25 seconds.
The shortest day of the month is August 31, with 12 hours, 44 minutes of daylight and the longest day is August 1, with 13 hours, 29 minutes of daylight.
Hours of Daylight and Twilight in August
The earliest sunrise of the month in Dilley is 6:58 AM on August 1 and the latest sunrise is 16 minutes later at 7:14 AM on August 31.
The latest sunset is 8:27 PM on August 1 and the earliest sunset is 29 minutes earlier at 7:58 PM on August 31.
Daylight saving time is observed in Dilley during 2021, 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 6:39 AM and sets 13 hours, 58 minutes later, at 8:37 PM, while on December 21, the shortest day of the year, it rises at 7:25 AM and sets 10 hours, 19 minutes later, at 5:44 PM.
Sunrise & Sunset with Twilight in August
The figure below presents a compact representation of key lunar data for August 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 August
The chance that a given day will be muggy in Dilley is essentially constant during August, remaining within 1% of 79% throughout.
For reference, on June 28, the muggiest day of the year, there are muggy conditions 84% of the time, while on January 20, the least muggy day of the year, there are muggy conditions 1% of the time.
Humidity Comfort Levels in August
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Dilley is decreasing during August, decreasing from 10.1 miles per hour to 9.0 miles per hour over the course of the month.
For reference, on June 6, the windiest day of the year, the daily average wind speed is 10.7 miles per hour, while on January 10, the calmest day of the year, the daily average wind speed is 8.1 miles per hour.
Average Wind Speed in August
The wind direction in Dilley during August is predominantly out of the south from August 1 to August 21 and the east from August 21 to August 31.
Wind Direction in August
The growing season in Dilley typically lasts for 10 months (307 days), from around February 6 to around December 9, rarely starting after March 14, or ending before November 19.
The month of August in Dilley is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in August
The average accumulated growing degree days in Dilley are very rapidly increasing during August, increasing by 958°F, from 4,360°F to 5,317°F, over the course of the month.
Growing Degree Days in August
The average daily incident shortwave solar energy in Dilley is gradually decreasing during August, falling by 0.7 kWh, from 6.6 kWh to 5.9 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in August
For the purposes of this report, the geographical coordinates of Dilley are 28.667 deg latitude, -99.171 deg longitude, and 558 ft elevation.
The topography within 2 miles of Dilley contains only modest variations in elevation, with a maximum elevation change of 102 feet and an average elevation above sea level of 534 feet. Within 10 miles also contains only modest variations in elevation (282 feet). Within 50 miles contains only modest variations in elevation (948 feet).
The area within 2 miles of Dilley is covered by cropland (49%), grassland (28%), and shrubs (21%), within 10 miles by shrubs (49%) and cropland (31%), and within 50 miles by shrubs (63%) and grassland (21%).
This report illustrates the typical weather in Dilley, 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Dilley.
For each station, the records are corrected for the elevation difference between that station and Dilley 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 Dilley is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Dilley and a given station.
The stations contributing to this reconstruction are: Cotulla–La Salle County Airport (59%, 24 kilometers, south); Pleasanton Municipal Airport (12%, 71 kilometers, northeast); Hondo Municipal Airport (10%, 77 kilometers, north); Castroville Municipal Airport (10%, 81 kilometers, north); and Garner Field Airport (9%, 82 kilometers, northwest).
Time zones for airports and weather stations are provided by AskGeo.com .