Average Weather in August in Afton Oklahoma, United States
Daily high temperatures decrease by 3°F, from 92°F to 89°F, rarely falling below 80°F or exceeding 100°F.
Daily low temperatures decrease by 4°F, from 71°F to 67°F, rarely falling below 58°F or exceeding 77°F.
For reference, on July 24, the hottest day of the year, temperatures in Afton typically range from 72°F to 92°F, while on January 6, the coldest day of the year, they range from 28°F to 47°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 Afton experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 29% throughout the month.
The clearest day of the month is August 26, with clear, mostly clear, or partly cloudy conditions 72% of the time.
For reference, on February 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 49%, while on July 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
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 Afton, the chance of a wet day over the course of August is essentially constant, remaining around 28% throughout.
For reference, the year's highest daily chance of a wet day is 45% on May 21, and its lowest chance is 13% on January 12.
Probability of Precipitation in August
The average sliding 31-day rainfall during August in Afton is increasing, starting the month at 2.8 inches, when it rarely exceeds 5.0 inches or falls below 0.9 inches, and ending the month at 3.5 inches, when it rarely exceeds 6.2 inches or falls below 1.2 inches.
The lowest average 31-day accumulation is 2.8 inches on August 1.
Average Monthly Rainfall in August
Over the course of August in Afton, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 1 minute, implying an average daily decrease of 2 minutes, 2 seconds, and weekly decrease of 14 minutes, 14 seconds.
The shortest day of the month is August 31, with 13 hours, 0 minutes of daylight and the longest day is August 1, with 14 hours, 1 minute of daylight.
Hours of Daylight and Twilight in August
The earliest sunrise of the month in Afton is 6:25 AM on August 1 and the latest sunrise is 24 minutes later at 6:49 AM on August 31.
The latest sunset is 8:26 PM on August 1 and the earliest sunset is 37 minutes earlier at 7:49 PM on August 31.
Daylight saving time is observed in Afton during 2019, 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 6:01 AM and sets 14 hours, 41 minutes later, at 8:41 PM, while on December 22, the shortest day of the year, it rises at 7:28 AM and sets 9 hours, 39 minutes later, at 5:07 PM.
Sunrise & Sunset with Twilight in August
The chance that a given day will be muggy in Afton is rapidly decreasing during August, falling from 77% to 60% over the course of the month.
For reference, on July 6, the muggiest day of the year, there are muggy conditions 83% of the time, while on December 13, 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 Afton is gradually increasing during August, increasing from 6.9 miles per hour to 7.5 miles per hour over the course of the month.
For reference, on April 1, the windiest day of the year, the daily average wind speed is 11.0 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 6.9 miles per hour.
The lowest daily average wind speed during August is 6.9 miles per hour on August 4.
Average Wind Speed in August
Wind Direction in August
The growing season in Afton typically lasts for 7.0 months (214 days), from around March 31 to around October 31, rarely starting before March 9 or after April 20, and rarely ending before October 12 or after November 20.
The month of August in Afton 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 Afton are rapidly increasing during August, increasing by 837°F, from 2,819°F to 3,656°F, over the course of the month.
Growing Degree Days in August
The average daily incident shortwave solar energy in Afton is gradually decreasing during August, falling by 0.8 kWh, from 6.7 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 Afton are 36.694 deg latitude, -94.963 deg longitude, and 791 ft elevation.
The topography within 2 miles of Afton is essentially flat, with a maximum elevation change of 62 feet and an average elevation above sea level of 790 feet. Within 10 miles is essentially flat (335 feet). Within 50 miles contains only modest variations in elevation (932 feet).
The area within 2 miles of Afton is covered by cropland (98%), within 10 miles by cropland (80%), and within 50 miles by cropland (64%) and trees (28%).
This report illustrates the typical weather in Afton 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
There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Afton.
For each station, the records are corrected for the elevation difference between that station and Afton 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 Afton is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Afton and a given station.
The stations contributing to this reconstruction are: Grove Municipal Airport (63%, 22 kilometers, southeast); Claremore Regional Airport (13%, 64 kilometers, southwest); Joplin Regional Airport (12%, 66 kilometers, northeast); and Coffeyville Municipal Airport (12%, 70 kilometers, northwest).
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.
Time zones for aiports and weather stations are provided by AskGeo.com .