Average Weather in August in Harper Texas, United States
Daily high temperatures decrease by 3°F, from 92°F to 89°F, rarely falling below 82°F or exceeding 97°F. The highest daily average high temperature is 92°F on August 5.
Daily low temperatures decrease by 2°F, from 70°F to 68°F, rarely falling below 63°F or exceeding 73°F.
For reference, on August 3, the hottest day of the year, temperatures in Harper typically range from 70°F to 92°F, while on January 6, the coldest day of the year, they range from 35°F to 58°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 Harper experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 38% throughout the month. The highest chance of overcast or mostly cloudy conditions is 40% on August 11.
The clearest day of the month is August 1, with clear, mostly clear, or partly cloudy conditions 63% of the time.
For reference, on January 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 45%, while on June 15, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 74%.
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 Harper, the chance of a wet day over the course of August is very rapidly increasing, starting the month at 16% and ending it at 25%.
For reference, the year's highest daily chance of a wet day is 33% on May 27, and its lowest chance is 12% on December 28.
Probability of Precipitation in August
The average sliding 31-day rainfall during August in Harper is increasing, starting the month at 1.3 inches, when it rarely exceeds 2.7 inches or falls below 0.1 inches, and ending the month at 2.2 inches, when it rarely exceeds 4.8 inches or falls below 0.3 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 Harper, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 48 minutes, implying an average daily decrease of 1 minute, 36 seconds, and weekly decrease of 11 minutes, 9 seconds.
The shortest day of the month is August 31, with 12 hours, 47 minutes of daylight and the longest day is August 1, with 13 hours, 35 minutes of daylight.
Hours of Daylight and Twilight in August
The earliest sunrise of the month in Harper is 6:55 AM on August 1 and the latest sunrise is 18 minutes later at 7:13 AM on August 31.
The latest sunset is 8:30 PM on August 1 and the earliest sunset is 30 minutes earlier at 8:00 PM on August 31.
Daylight saving time is observed in Harper 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 6:35 AM and sets 14 hours, 6 minutes later, at 8:41 PM, while on December 21, the shortest day of the year, it rises at 7:29 AM and sets 10 hours, 12 minutes later, at 5:41 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 Harper is gradually decreasing during August, falling from 51% to 49% over the course of the month.
For reference, on June 24, the muggiest day of the year, there are muggy conditions 58% of the time, while on January 20, the least muggy day of the year, there are muggy conditions 0% 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 Harper is gradually decreasing during August, decreasing from 9.6 miles per hour to 8.8 miles per hour over the course of the month.
For reference, on April 2, the windiest day of the year, the daily average wind speed is 11.9 miles per hour, while on September 10, the calmest day of the year, the daily average wind speed is 8.7 miles per hour.
Average Wind Speed in August
The hourly average wind direction in Harper throughout August is predominantly from the south, with a peak proportion of 78% on August 1.
Wind Direction in August
The growing season in Harper typically lasts for 7.8 months (240 days), from around March 18 to around November 12, rarely starting before February 21 or after April 15, and rarely ending before October 22 or after December 4.
The month of August in Harper 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 Harper are rapidly increasing during August, increasing by 857°F, from 3,341°F to 4,198°F, over the course of the month.
Growing Degree Days in August
The average daily incident shortwave solar energy in Harper is gradually decreasing during August, falling by 0.8 kWh, from 6.9 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 Harper are 30.300 deg latitude, -99.244 deg longitude, and 2,051 ft elevation.
The topography within 2 miles of Harper contains only modest variations in elevation, with a maximum elevation change of 230 feet and an average elevation above sea level of 2,073 feet. Within 10 miles contains only modest variations in elevation (545 feet). Within 50 miles contains significant variations in elevation (1,565 feet).
The area within 2 miles of Harper is covered by grassland (58%) and shrubs (42%), within 10 miles by shrubs (52%) and grassland (44%), and within 50 miles by shrubs (56%) and grassland (28%).
This report illustrates the typical weather in Harper, 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 Harper.
For each station, the records are corrected for the elevation difference between that station and Harper 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 Harper is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Harper and a given station.
The stations contributing to this reconstruction are: Gillespie County Airport (40%, 33 kilometers, east); Vamc Heliport (32%, 39 kilometers, southeast); Kimble County Airport (20%, 55 kilometers, northwest); and Brady Curtis Field (8%, 98 kilometers, north).
Time zones for airports and weather stations are provided by AskGeo.com .