Average Weather in August in Brookville Indiana, United States
In Brookville, the month of August is characterized by gradually falling daily high temperatures, with daily highs decreasing by 2°F, from 84°F to 81°F over the course of the month, and rarely exceeding 91°F or dropping below 74°F.
Daily low temperatures decrease by 4°F, from 66°F to 62°F, rarely falling below 53°F or exceeding 73°F.
For reference, on July 20, the hottest day of the year, temperatures in Brookville typically range from 67°F to 84°F, while on January 29, the coldest day of the year, they range from 23°F to 37°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 Brookville 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 lowest chance of overcast or mostly cloudy conditions is 32% on August 23.
The clearest day of the month is August 23, with clear, mostly clear, or partly cloudy conditions 68% of the time.
For reference, on December 25, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 60%, while on August 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 68%.
Cloud Cover Categories in August
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Brookville, the chance of a wet day over the course of August is very rapidly decreasing, starting the month at 35% and ending it at 27%.
For reference, the year's highest daily chance of a wet day is 41% on June 26, and its lowest chance is 20% on January 28.
Probability of Precipitation in August
The average sliding 31-day rainfall during August in Brookville is gradually decreasing, starting the month at 2.9 inches, when it rarely exceeds 4.7 inches or falls below 1.4 inches, and ending the month at 2.6 inches, when it rarely exceeds 4.8 inches or falls below 0.9 inches.
Average Monthly Rainfall in August
Over the course of August in Brookville, 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, 8 minutes, implying an average daily decrease of 2 minutes, 16 seconds, and weekly decrease of 15 minutes, 49 seconds.
The shortest day of the month is August 31, with 13 hours, 4 minutes of daylight and the longest day is August 1, with 14 hours, 12 minutes of daylight.
Hours of Daylight and Twilight in August
The earliest sunrise of the month in Brookville is 6:40 AM on August 1 and the latest sunrise is 28 minutes later at 7:07 AM on August 31.
The latest sunset is 8:52 PM on August 1 and the earliest sunset is 40 minutes earlier at 8:12 PM on August 31.
Daylight saving time is observed in Brookville during 2017, 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, 57 minutes later, at 9:10 PM, while on December 21, the shortest day of the year, it rises at 7:56 AM and sets 9 hours, 23 minutes later, at 5:19 PM.
Sunrise & Sunset with Twilight in August
The chance that a given day will be muggy in Brookville is rapidly decreasing during August, falling from 54% to 37% over the course of the month.
For reference, on July 19, the muggiest day of the year, there are muggy conditions 57% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in August
The average hourly wind speed in Brookville is essentially constant during August, remaining within 0.2 miles per hour of 6.2 miles per hour throughout.
For reference, on January 15, the windiest day of the year, the daily average wind speed is 10.6 miles per hour, while on August 1, the calmest day of the year, the daily average wind speed is 6.0 miles per hour.
The lowest daily average wind speed during August is 6.0 miles per hour on August 1.
Average Wind Speed in August
Wind Direction in August
The growing season in Brookville typically lasts for 6.3 months (193 days), from around April 13 to around October 22, rarely starting before March 28 or after April 29, and rarely ending before October 5 or after November 12.
The month of August in Brookville 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 Brookville is rapidly increasing during August, increasing by 691°F, from 2,158°F to 2,849°F, over the course of the month.
Growing Degree Days in August
The average daily incident shortwave solar energy in Brookville 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
For the purposes of this report, the geographical coordinates of Brookville are 39.423 deg latitude, -85.013 deg longitude, and 817 ft elevation.
The topography within 2 miles of Brookville contains only modest variations in elevation, with a maximum elevation change of 440 feet and an average elevation above sea level of 774 feet. Within 10 miles contains only modest variations in elevation (518 feet). Within 50 miles contains significant variations in elevation (833 feet).
The area within 2 miles of Brookville is covered by trees (54%), cropland (22%), and artificial surfaces (18%), within 10 miles by cropland (50%) and trees (46%), and within 50 miles by cropland (63%) and trees (25%).
This report illustrates the typical weather in Brookville 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Brookville.
For each station, the records are corrected for the elevation difference between that station and Brookville 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 Brookville is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Brookville and a given station.
The stations contributing to this reconstruction are: Butler County Regional Airport (34%, 42 kilometers, east); Cincinnati/Northern Kentucky International Airport (26%, 51 kilometers, southeast); Shelbyville Municipal Airport (16%, 70 kilometers, west); Columbus Bakalar Municipal Airport (14%, 78 kilometers, west); and Delaware County Regional Airport (10%, 96 kilometers, north).
Time zones for aiports and weather stations are provided by AskGeo.com .