Average Weather in August in Shelbyville Kentucky, United States
In Shelbyville, the month of August is characterized by gradually falling daily high temperatures, with daily highs decreasing by 2°F, from 86°F to 84°F over the course of the month, and rarely exceeding 92°F or dropping below 76°F.
Daily low temperatures decrease by 3°F, from 68°F to 64°F, rarely falling below 56°F or exceeding 74°F.
For reference, on July 21, the hottest day of the year, temperatures in Shelbyville typically range from 68°F to 86°F, while on January 29, the coldest day of the year, they range from 26°F to 42°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 Shelbyville 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 January 2, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on August 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 68%.
Cloud Cover in August
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Shelbyville, the chance of a wet day over the course of August is rapidly decreasing, starting the month at 35% and ending it at 28%.
For reference, the year's highest daily chance of a wet day is 40% on May 12, and its lowest chance is 23% on January 13.
Probability of Precipitation in August
The average sliding 31-day rainfall during August in Shelbyville is gradually decreasing, starting the month at 3.1 inches, when it rarely exceeds 5.1 inches or falls below 1.3 inches, and ending the month at 2.6 inches, when it rarely exceeds 4.7 inches or falls below 0.9 inches.
The lowest average 31-day accumulation is 2.6 inches on August 26.
Average Monthly Rainfall in August
Over the course of August in Shelbyville, 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, 5 minutes, implying an average daily decrease of 2 minutes, 10 seconds, and weekly decrease of 15 minutes, 7 seconds.
The shortest day of the month is August 31, with 13 hours, 2 minutes of daylight and the longest day is August 1, with 14 hours, 7 minutes of daylight.
Hours of Daylight and Twilight in August
The earliest sunrise of the month in Shelbyville is 6:43 AM on August 1 and the latest sunrise is 26 minutes later at 7:09 AM on August 31.
The latest sunset is 8:50 PM on August 1 and the earliest sunset is 39 minutes earlier at 8:11 PM on August 31.
Daylight saving time is observed in Shelbyville 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 6:17 AM and sets 14 hours, 50 minutes later, at 9:07 PM, while on December 21, the shortest day of the year, it rises at 7:54 AM and sets 9 hours, 30 minutes later, at 5:24 PM.
Sunrise & Sunset with Twilight in August
The chance that a given day will be muggy in Shelbyville is rapidly decreasing during August, falling from 62% to 47% over the course of the month.
For reference, on July 24, the muggiest day of the year, there are muggy conditions 66% 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 Shelbyville is essentially constant during August, remaining within 0.1 miles per hour of 2.7 miles per hour throughout.
For reference, on February 25, the windiest day of the year, the daily average wind speed is 4.7 miles per hour, while on August 1, the calmest day of the year, the daily average wind speed is 2.6 miles per hour.
The lowest daily average wind speed during August is 2.6 miles per hour on August 1.
Average Wind Speed in August
Wind Direction in August
The average daily incident shortwave solar energy in Shelbyville 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 Shelbyville are 38.212 deg latitude, -85.224 deg longitude, and 764 ft elevation.
The topography within 2 miles of Shelbyville contains only modest variations in elevation, with a maximum elevation change of 141 feet and an average elevation above sea level of 748 feet. Within 10 miles contains only modest variations in elevation (669 feet). Within 50 miles contains significant variations in elevation (984 feet).
The area within 2 miles of Shelbyville is covered by cropland (55%) and artificial surfaces (45%), within 10 miles by cropland (87%), and within 50 miles by cropland (50%) and trees (42%).
This report illustrates the typical weather in Shelbyville 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Shelbyville.
For each station, the records are corrected for the elevation difference between that station and Shelbyville 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 Shelbyville is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Shelbyville and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .