Average Weather in May in Fort Knox Kentucky, United States
In Fort Knox, the month of May is characterized by rising daily high temperatures, with daily highs increasing by 7°F, from 72°F to 79°F over the course of the month, and rarely exceeding 87°F or dropping below 61°F.
Daily low temperatures increase by 8°F, from 52°F to 61°F, rarely falling below 41°F or exceeding 69°F.
For reference, on July 21, the hottest day of the year, temperatures in Fort Knox typically range from 69°F to 87°F, while on January 29, the coldest day of the year, they range from 27°F to 43°F.
Average High and Low Temperature in May
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. 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 May
The month of May in Fort Knox experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 48% throughout the month. The highest chance of overcast or mostly cloudy conditions is 50% on May 27.
The clearest day of the month is May 1, with clear, mostly clear, or partly cloudy conditions 53% of the time.
For reference, on January 2, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 57%, 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 May
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Fort Knox, the chance of a wet day over the course of May is essentially constant, remaining around 39% throughout.
For reference, the year's highest daily chance of a wet day is 40% on June 9, and its lowest chance is 23% on October 15.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Fort Knox is decreasing, starting the month at 4.8 inches, when it rarely exceeds 8.2 inches or falls below 2.0 inches, and ending the month at 4.1 inches, when it rarely exceeds 7.1 inches or falls below 1.8 inches.
The highest average 31-day accumulation is 4.8 inches on May 3.
Average Monthly Rainfall in May
Over the course of May in Fort Knox, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 49 minutes, implying an average daily increase of 1 minute, 38 seconds, and weekly increase of 11 minutes, 29 seconds.
The shortest day of the month is May 1, with 13 hours, 47 minutes of daylight and the longest day is May 31, with 14 hours, 36 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Fort Knox is 6:47 AM on May 1 and the earliest sunrise is 24 minutes earlier at 6:23 AM on May 31.
The earliest sunset is 8:34 PM on May 1 and the latest sunset is 25 minutes later at 8:59 PM on May 31.
Daylight saving time is observed in Fort Knox during 2017, but it neither starts nor ends during May, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 6:21 AM and sets 14 hours, 48 minutes later, at 9:09 PM, while on December 21, the shortest day of the year, it rises at 7:56 AM and sets 9 hours, 32 minutes later, at 5:28 PM.
Sunrise & Sunset with Twilight in May
The chance that a given day will be muggy in Fort Knox is very rapidly increasing during May, rising from 4% to 30% over the course of the month.
For reference, on July 24, the muggiest day of the year, there are muggy conditions 71% 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 May
The average hourly wind speed in Fort Knox is gradually decreasing during May, decreasing from 3.6 miles per hour to 3.0 miles per hour over the course of the month.
For reference, on February 25, the windiest day of the year, the daily average wind speed is 4.3 miles per hour, while on July 31, the calmest day of the year, the daily average wind speed is 2.4 miles per hour.
Average Wind Speed in May
Wind Direction in May
The average daily incident shortwave solar energy in Fort Knox is essentially constant during May, remaining within 0.2 kWh of 6.2 kWh throughout.
Average Daily Incident Shortwave Solar Energy in May
For the purposes of this report, the geographical coordinates of Fort Knox are 37.891 deg latitude, -85.964 deg longitude, and 702 ft elevation.
The topography within 2 miles of Fort Knox contains only modest variations in elevation, with a maximum elevation change of 279 feet and an average elevation above sea level of 710 feet. Within 10 miles contains only modest variations in elevation (630 feet). Within 50 miles also contains significant variations in elevation (801 feet).
The area within 2 miles of Fort Knox is covered by artificial surfaces (46%), trees (30%), and cropland (24%), within 10 miles by trees (57%) and cropland (36%), and within 50 miles by trees (49%) and cropland (44%).
This report illustrates the typical weather in Fort Knox 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Fort Knox.
For each station, the records are corrected for the elevation difference between that station and Fort Knox 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 Fort Knox is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Fort Knox and a given station.
The stations contributing to this reconstruction are: Godman Army Airfield (99%, 1.0 kilometers, north); Glasgow Municipal Airport (0.3%, 96 kilometers, south); and Stuart Powell Field (0.2%, 111 kilometers, east).
Time zones for aiports and weather stations are provided by AskGeo.com .