Average Weather in May in Shelbyville Indiana, United States
In Shelbyville, the month of May is characterized by rising daily high temperatures, with daily highs increasing by 8°F, from 70°F to 78°F over the course of the month, and rarely exceeding 87°F or dropping below 58°F.
Daily low temperatures increase by 9°F, from 50°F to 59°F, rarely falling below 39°F or exceeding 69°F.
For reference, on July 19, the hottest day of the year, temperatures in Shelbyville typically range from 66°F to 85°F, while on January 29, the coldest day of the year, they range from 22°F to 37°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 Shelbyville experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 50% throughout the month.
The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 51% 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 69%.
Cloud Cover in May
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 May is gradually increasing, starting the month at 38% and ending it at 40%.
For reference, the year's highest daily chance of a wet day is 42% on June 8, and its lowest chance is 20% on January 29.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Shelbyville is essentially constant, remaining about 4.2 inches throughout, and rarely exceeding 7.1 inches or falling below 1.6 inches.
The highest average 31-day accumulation is 4.3 inches on May 13.
Average Monthly Rainfall in May
Over the course of May in Shelbyville, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 52 minutes, implying an average daily increase of 1 minute, 45 seconds, and weekly increase of 12 minutes, 13 seconds.
The shortest day of the month is May 1, with 13 hours, 53 minutes of daylight and the longest day is May 31, with 14 hours, 46 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Shelbyville is 6:43 AM on May 1 and the earliest sunrise is 26 minutes earlier at 6:18 AM on May 31.
The earliest sunset is 8:37 PM on May 1 and the latest sunset is 27 minutes later at 9:03 PM on May 31.
Daylight saving time is observed in Shelbyville 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 6:16 AM and sets 14 hours, 58 minutes later, at 9:13 PM, while on December 21, the shortest day of the year, it rises at 8:00 AM and sets 9 hours, 23 minutes later, at 5:22 PM.
Sunrise & Sunset with Twilight in May
The chance that a given day will be muggy in Shelbyville is rapidly increasing during May, rising from 2% to 22% over the course of the month.
For reference, on July 22, the muggiest day of the year, there are muggy conditions 60% 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 Shelbyville is gradually decreasing during May, decreasing from 5.4 miles per hour to 4.6 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 6.2 miles per hour, while on July 31, the calmest day of the year, the daily average wind speed is 3.5 miles per hour.
Average Wind Speed in May
Wind Direction in May
The average daily incident shortwave solar energy in Shelbyville is gradually increasing during May, rising by 0.6 kWh, from 5.9 kWh to 6.4 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in May
For the purposes of this report, the geographical coordinates of Shelbyville are 39.521 deg latitude, -85.777 deg longitude, and 771 ft elevation.
The topography within 2 miles of Shelbyville is essentially flat, with a maximum elevation change of 62 feet and an average elevation above sea level of 768 feet. Within 10 miles is essentially flat (246 feet). Within 50 miles contains only modest variations in elevation (886 feet).
The area within 2 miles of Shelbyville is covered by artificial surfaces (59%) and cropland (39%), within 10 miles by cropland (97%), and within 50 miles by cropland (67%) and trees (24%).
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 5 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.
The stations contributing to this reconstruction are: Shelbyville Municipal Airport (94%, 7 kilometers, north); Monroe County Airport (2.1%, 84 kilometers, southwest); Cincinnati/Northern Kentucky International Airport (1.4%, 109 kilometers, southeast); Butler County Regional Airport (1.4%, 109 kilometers, east); and Bowman Field (1.0%, 144 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .