Average Weather in July in Jeffersontown Kentucky, United States
In Jeffersontown, the month of July is characterized by essentially constant daily high temperatures, with daily highs around 86°F throughout the month, rarely exceeding 93°F or dropping below 79°F. The highest daily average high temperature is 87°F on July 21.
Daily low temperatures are around 69°F, rarely falling below 60°F or exceeding 76°F. The highest daily average low temperature is 70°F on July 22.
For reference, on July 21, the hottest day of the year, temperatures in Jeffersontown typically range from 69°F to 87°F, while on January 29, the coldest day of the year, they range from 27°F to 42°F.
Average High and Low Temperature in July
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. 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 July
The month of July in Jeffersontown experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 42% to 33%.
The clearest day of the month is July 31, with clear, mostly clear, or partly cloudy conditions 67% 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 69%.
Cloud Cover in July
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Jeffersontown, the chance of a wet day over the course of July is decreasing, starting the month at 39% and ending it at 33%.
For reference, the year's highest daily chance of a wet day is 41% on May 12, and its lowest chance is 23% on January 14.
Probability of Precipitation in July
The average sliding 31-day rainfall during July in Jeffersontown is decreasing, starting the month at 3.6 inches, when it rarely exceeds 5.5 inches or falls below 1.7 inches, and ending the month at 3.0 inches, when it rarely exceeds 5.2 inches or falls below 1.2 inches.
Average Monthly Rainfall in July
Over the course of July in Jeffersontown, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 38 minutes, implying an average daily decrease of 1 minute, 16 seconds, and weekly decrease of 8 minutes, 54 seconds.
The shortest day of the month is July 31, with 14 hours, 8 minutes of daylight and the longest day is July 1, with 14 hours, 46 minutes of daylight.
Hours of Daylight and Twilight in July
The earliest sunrise of the month in Jeffersontown is 6:22 AM on July 1 and the latest sunrise is 21 minutes later at 6:44 AM on July 31.
The latest sunset is 9:09 PM on July 1 and the earliest sunset is 17 minutes earlier at 8:52 PM on July 31.
Daylight saving time is observed in Jeffersontown during 2017, but it neither starts nor ends during July, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 6:19 AM and sets 14 hours, 50 minutes later, at 9:08 PM, while on December 21, the shortest day of the year, it rises at 7:55 AM and sets 9 hours, 30 minutes later, at 5:25 PM.
Sunrise & Sunset with Twilight in July
The chance that a given day will be muggy in Jeffersontown is gradually increasing during July, rising from 59% to 63% over the course of the month.
The highest chance of a muggy day during July is 66% on July 24.
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 July
The average hourly wind speed in Jeffersontown is essentially constant during July, remaining within 0.1 miles per hour of 3.0 miles per hour throughout.
For reference, on February 25, the windiest day of the year, the daily average wind speed is 5.0 miles per hour, while on July 31, the calmest day of the year, the daily average wind speed is 2.8 miles per hour.
Average Wind Speed in July
Wind Direction in July
The average daily incident shortwave solar energy in Jeffersontown is essentially constant during July, remaining around 6.6 kWh throughout.
The highest average daily incident shortwave solar energy during July is 6.7 kWh on July 2.
Average Daily Incident Shortwave Solar Energy in July
For the purposes of this report, the geographical coordinates of Jeffersontown are 38.194 deg latitude, -85.564 deg longitude, and 676 ft elevation.
The topography within 2 miles of Jeffersontown contains only modest variations in elevation, with a maximum elevation change of 213 feet and an average elevation above sea level of 675 feet. Within 10 miles also contains only modest variations in elevation (469 feet). Within 50 miles contains only modest variations in elevation (810 feet).
The area within 2 miles of Jeffersontown is covered by artificial surfaces (92%), within 10 miles by artificial surfaces (51%) and trees (25%), and within 50 miles by cropland (49%) and trees (44%).
This report illustrates the typical weather in Jeffersontown 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 Jeffersontown.
For each station, the records are corrected for the elevation difference between that station and Jeffersontown 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 Jeffersontown is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Jeffersontown and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .