Average Weather in August in Zapata Texas, United States
Daily high temperatures decrease by 3°F, from 99°F to 95°F, rarely falling below 89°F or exceeding 104°F. The highest daily average high temperature is 99°F on August 5.
Daily low temperatures are around 76°F, rarely falling below 71°F or exceeding 79°F.
For reference, on August 5, the hottest day of the year, temperatures in Zapata typically range from 76°F to 99°F, while on January 5, the coldest day of the year, they range from 48°F to 68°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 Zapata experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 48% throughout the month. The highest chance of overcast or mostly cloudy conditions is 49% on August 23.
The clearest day of the month is August 6, with clear, mostly clear, or partly cloudy conditions 53% of the time.
For reference, on August 23, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 49%, while on June 4, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 78%.
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 Zapata, the chance of a wet day over the course of August is very rapidly increasing, starting the month at 15% and ending it at 27%.
For reference, the year's highest daily chance of a wet day is 33% on September 13, and its lowest chance is 9% on December 14.
Probability of Precipitation in August
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 in Zapata is rapidly increasing, starting the month at 1.3 inches, when it rarely exceeds 3.0 inches, and ending the month at 2.6 inches, when it rarely exceeds 5.3 inches or falls below 0.6 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 Zapata, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 41 minutes, implying an average daily decrease of 1 minute, 23 seconds, and weekly decrease of 9 minutes, 39 seconds.
The shortest day of the month is August 31, with 12 hours, 42 minutes of daylight and the longest day is August 1, with 13 hours, 23 minutes of daylight.
Hours of Daylight and Twilight in August
The earliest sunrise of the month in Zapata is 7:01 AM on August 1 and the latest sunrise is 14 minutes later at 7:16 AM on August 31.
The latest sunset is 8:24 PM on August 1 and the earliest sunset is 27 minutes earlier at 7:57 PM on August 31.
Daylight saving time is observed in Zapata 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 6:43 AM and sets 13 hours, 50 minutes later, at 8:34 PM, while on December 21, the shortest day of the year, it rises at 7:21 AM and sets 10 hours, 27 minutes later, at 5:48 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 Zapata is increasing during August, rising from 65% to 71% over the course of the month.
For reference, on June 23, the muggiest day of the year, there are muggy conditions 72% of the time, while on January 23, 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 Zapata is rapidly decreasing during August, decreasing from 12.6 miles per hour to 10.5 miles per hour over the course of the month.
For reference, on July 14, the windiest day of the year, the daily average wind speed is 13.2 miles per hour, while on January 1, the calmest day of the year, the daily average wind speed is 8.5 miles per hour.
Average Wind Speed in August
The hourly average wind direction in Zapata throughout August is predominantly from the east, with a peak proportion of 59% on August 31.
Wind Direction in August
While it does not do so every year, freezing temperatures are seen in Zapata over some winters. The day least likely to be in the growing season is January 2, with a 56% chance.
Time Spent in Various Temperature Bands and the Growing Season in August
The average accumulated growing degree days in Zapata are very rapidly increasing during August, increasing by 972°F, from 4,759°F to 5,731°F, over the course of the month.
Growing Degree Days in August
The average daily incident shortwave solar energy in Zapata is gradually decreasing during August, falling by 0.7 kWh, from 6.7 kWh to 6.0 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 Zapata are 26.907 deg latitude, -99.271 deg longitude, and 394 ft elevation.
The topography within 2 miles of Zapata contains only modest variations in elevation, with a maximum elevation change of 210 feet and an average elevation above sea level of 364 feet. Within 10 miles also contains only modest variations in elevation (289 feet). Within 50 miles contains only modest variations in elevation (1,542 feet).
The area within 2 miles of Zapata is covered by grassland (61%), shrubs (21%), and artificial surfaces (11%), within 10 miles by shrubs (43%) and grassland (40%), and within 50 miles by shrubs (50%) and grassland (27%).
This report illustrates the typical weather in Zapata, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Zapata.
For each station, the records are corrected for the elevation difference between that station and Zapata 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 Zapata is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Zapata and a given station.
The stations contributing to this reconstruction are: Zapata County Airport (97%, 7 kilometers, north); Edinburg Rio Grande Valley Regional Freight Terminal Airport (1.3%, 125 kilometers, southeast); Del Norte International Airport (0.9%, 151 kilometers, southwest); and General Mariano Escobedo International Airport (1.0%, 151 kilometers, southwest).
Time zones for airports and weather stations are provided by AskGeo.com .